Refactor schema slots to resolve OWL ambiguity and enhance flexibility

- Updated ranges for multiple slots from `string` to `uriorcurie` to address OWL "Ambiguous type" warnings and allow for URI/CURIE references. - Removed specialized slots for subtitle and transcript formats, consolidating them under broader predicates. - Introduced new slots for structured descriptions, observation source documents, and entity statuses to improve data modeling. - Implemented Rule 54 to broaden generic predicate ranges instead of creating bespoke predicates, promoting schema reuse and reducing complexity. - Added a script for generating OWL ontology with type-object handling to ensure consistent ObjectProperty treatment for polymorphic slots.
2026-01-16 15:06:36 +01:00 · 2026-01-16 15:06:36 +01:00 · db389ed0a3
commit db389ed0a3
parent 0a1f6c6f34
68 changed files with 1522 additions and 434 deletions
--- a/.opencode/rules/broaden-generic-predicate-ranges-rule.md
+++ b/.opencode/rules/broaden-generic-predicate-ranges-rule.md
@ -0,0 +1,179 @@
+# Rule 54: Broaden Generic Predicate Ranges Instead of Creating Bespoke Predicates
+
+🚨 **CRITICAL**: When fixing gen-owl "Ambiguous type" warnings, **broaden the range of generic predicates** rather than creating specialized bespoke predicates.
+
+## The Problem
+
+gen-owl "Ambiguous type" warnings occur when a slot is used as both:
+- **DatatypeProperty** (base range: `string`, `integer`, `uri`, etc.)
+- **ObjectProperty** (slot_usage override range: a class like `Description`, `SubtitleFormatEnum`)
+
+This creates OWL ambiguity because OWL requires properties to be either DatatypeProperty OR ObjectProperty, not both.
+
+## ❌ WRONG Approach: Create Bespoke Predicates
+
+```yaml
+# DON'T DO THIS - creates proliferation of rare-use predicates
+slots:
+  has_or_had_subtitle_format:    # Only used by VideoSubtitle
+    range: SubtitleFormatEnum
+  has_or_had_transcript_format:  # Only used by VideoTranscript
+    range: TranscriptFormat
+```
+
+**Why This Is Wrong**:
+- Creates **predicate proliferation** (schema bloat)
+- Bespoke predicates are **rarely reused** across classes
+- **Increases cognitive load** for schema users
+- **Fragments the ontology** unnecessarily
+- Violates the principle of schema parsimony
+
+## ✅ CORRECT Approach: Broaden Generic Predicate Ranges
+
+```yaml
+# DO THIS - make the generic predicate flexible enough
+slots:
+  has_or_had_format:
+    range: uriorcurie  # Broadened from string
+    description: |
+      The format of a resource. Classes narrow this to specific
+      enum types (SubtitleFormatEnum, TranscriptFormatEnum) via slot_usage.
+```
+
+Then in class files, use `slot_usage` to narrow the range:
+
+```yaml
+classes:
+  VideoSubtitle:
+    slots:
+      - has_or_had_format
+    slot_usage:
+      has_or_had_format:
+        range: SubtitleFormatEnum  # Narrowed for this class
+        required: true
+```
+
+## Range Broadening Options
+
+| Original Range | Broadened Range | When to Use |
+|----------------|-----------------|-------------|
+| `string` | `uriorcurie` | When class overrides use URI-identified types or enums |
+| `string` | `Any` | When truly polymorphic (strings AND class instances) |
+| Specific class | Common base class | When multiple subclasses are used |
+
+## Decision Tree
+
+```
+gen-owl warning: "Ambiguous type for: SLOTNAME"
+    ↓
+Is base slot range a primitive (string, integer, uri)?
+├─ YES → Broaden to uriorcurie or Any
+│        - Edit modules/slots/SLOTNAME.yaml
+│        - Change range: string → range: uriorcurie
+│        - Document change with Rule 54 reference
+│        - Keep class-level slot_usage overrides (they narrow the range)
+│
+└─ NO → Consider if base slot needs common ancestor class
+         - Create abstract base class if needed
+         - Or broaden to uriorcurie
+```
+
+## Implementation Workflow
+
+1. **Identify warning**: `gen-owl ... 2>&1 | grep "Ambiguous type for:"`
+
+2. **Check base slot range**:
+   ```bash
+   cat modules/slots/SLOTNAME.yaml | grep -A5 "^slots:" | grep "range:"
+   ```
+
+3. **Find class overrides**:
+   ```bash
+   for f in modules/classes/*.yaml; do
+     grep -l "SLOTNAME" "$f" && grep -A3 "SLOTNAME:" "$f" | grep "range:"
+   done
+   ```
+
+4. **Broaden base range**:
+   - Edit `modules/slots/SLOTNAME.yaml`
+   - Change `range: string` → `range: uriorcurie`
+   - Add annotation documenting the change
+
+5. **Verify fix**: Run gen-owl and confirm warning is gone
+
+6. **Keep slot_usage overrides**: Class-level range narrowing is fine and expected
+
+## Examples
+
+### Example 1: has_or_had_format
+
+**Before (caused warning)**:
+```yaml
+# Base slot
+slots:
+  has_or_had_format:
+    range: string  # DatatypeProperty
+
+# Class override
+classes:
+  VideoSubtitle:
+    slot_usage:
+      has_or_had_format:
+        range: SubtitleFormatEnum  # ObjectProperty → CONFLICT!
+```
+
+**After (fixed)**:
+```yaml
+# Base slot - broadened
+slots:
+  has_or_had_format:
+    range: uriorcurie  # Now ObjectProperty-compatible
+
+# Class override - unchanged, still narrows
+classes:
+  VideoSubtitle:
+    slot_usage:
+      has_or_had_format:
+        range: SubtitleFormatEnum  # Valid narrowing
+```
+
+### Example 2: has_or_had_hypernym
+
+**Before**: `range: string` (DatatypeProperty)
+**After**: `range: uriorcurie` (ObjectProperty-compatible)
+
+Classes that override to class ranges now work without ambiguity.
+
+## Validation
+
+After broadening, run:
+```bash
+gen-owl 01_custodian_name_modular.yaml 2>&1 | grep "Ambiguous type for: SLOTNAME"
+```
+
+The warning should disappear without creating new predicates.
+
+## Anti-Patterns to Avoid
+
+| ❌ Anti-Pattern | ✅ Correct Pattern |
+|----------------|-------------------|
+| Create `has_or_had_subtitle_format` | Broaden `has_or_had_format` to `uriorcurie` |
+| Create `has_or_had_entity_type` | Broaden `has_or_had_type` to `uriorcurie` |
+| Create `has_or_had_X_label` | Broaden `has_or_had_label` to `uriorcurie` |
+| Create `has_or_had_X_status` | Broaden `has_or_had_status` to `uriorcurie` |
+
+## Rationale
+
+This approach:
+1. **Reduces schema complexity** - Fewer predicates to understand
+2. **Promotes reuse** - Generic predicates work across domains
+3. **Maintains OWL consistency** - Single property type per predicate
+4. **Preserves type safety** - slot_usage still enforces class-specific ranges
+5. **Follows semantic web best practices** - Broad predicates, narrow contexts
+
+## See Also
+
+- Rule 38: Slot Centralization and Semantic URI Requirements
+- Rule 39: Slot Naming Convention (RiC-O Style)
+- Rule 49: Slot Usage Minimization
+- LinkML Documentation: [slot_usage](https://linkml.io/linkml-model/latest/docs/slot_usage/)
--- a/AGENTS.md
+++ b/AGENTS.md
@ -47,7 +47,7 @@ This is NOT a simple data extraction project. This is an **ontology engineering

 ---

-This section summarizes 54 critical rules. Each rule has complete documentation in `.opencode/` files.
+This section summarizes 55 critical rules. Each rule has complete documentation in `.opencode/` files.

 ### Rule 0: LinkML Schemas Are the Single Source of Truth

@ -1735,6 +1735,64 @@ from .provenance import ProvenanceTracker

 ---

+### Rule 55: Broaden Generic Predicate Ranges Instead of Creating Bespoke Predicates
+
+🚨 **CRITICAL**: When fixing gen-owl "Ambiguous type" warnings, **broaden the range of generic predicates** rather than creating specialized bespoke predicates.
+
+**The Problem**: gen-owl warnings occur when a slot is used as both:
+- **DatatypeProperty** (base range: `string`, `integer`, `uri`)
+- **ObjectProperty** (slot_usage override range: a class like `SubtitleFormatEnum`)
+
+**❌ WRONG Approach - Create Bespoke Predicates**:
+
+```yaml
+# DON'T DO THIS - creates proliferation of rare-use predicates
+slots:
+  has_or_had_subtitle_format:    # Only used by VideoSubtitle
+    range: SubtitleFormatEnum
+  has_or_had_transcript_format:  # Only used by VideoTranscript
+    range: TranscriptFormat
+```
+
+**Why This Is Wrong**:
+- Creates **predicate proliferation** (schema bloat)
+- Bespoke predicates are **rarely reused**
+- **Fragments the ontology** unnecessarily
+
+**✅ CORRECT Approach - Broaden Generic Predicate Ranges**:
+
+```yaml
+# DO THIS - broaden the base slot range
+slots:
+  has_or_had_format:
+    range: uriorcurie  # Broadened from string
+
+# Classes narrow via slot_usage (this is fine)
+classes:
+  VideoSubtitle:
+    slot_usage:
+      has_or_had_format:
+        range: SubtitleFormatEnum  # Valid narrowing
+```
+
+**Range Broadening Options**:
+
+| Original Range | Broadened Range | When to Use |
+|----------------|-----------------|-------------|
+| `string` | `uriorcurie` | When class overrides use URI-identified types/enums |
+| `string` | `Any` | When truly polymorphic (strings AND class instances) |
+| Specific class | Common base class | When multiple subclasses are used |
+
+**Implementation Workflow**:
+1. Identify warning: `gen-owl ... 2>&1 | grep "Ambiguous type for:"`
+2. Broaden base slot range: `range: string` → `range: uriorcurie`
+3. Keep class-level slot_usage overrides (they narrow the range)
+4. Verify fix: Run gen-owl and confirm warning is gone
+
+**See**: `.opencode/rules/broaden-generic-predicate-ranges-rule.md` for complete documentation
+
+---
+
 ## Appendix: Full Rule Content (No .opencode Equivalent)

 The following rules have no separate .opencode file and are preserved in full:
--- a/frontend/public/schemas/20251121/linkml/manifest.json
+++ b/frontend/public/schemas/20251121/linkml/manifest.json
@ -1,12 +1,12 @@
 {
-  "generated": "2026-01-16T13:33:06.596Z",
+  "generated": "2026-01-16T14:04:19.745Z",
  "schemaRoot": "/schemas/20251121/linkml",
-  "totalFiles": 3007,
+  "totalFiles": 3010,
  "categoryCounts": {
    "main": 4,
    "class": 818,
    "enum": 152,
-    "slot": 2029,
+    "slot": 2032,
    "module": 4
  },
  "categories": [
@ -9182,6 +9182,11 @@
          "path": "modules/slots/has_or_had_domain.yaml",
          "category": "slot"
        },
+        {
+          "name": "has_or_had_entity_status",
+          "path": "modules/slots/has_or_had_entity_status.yaml",
+          "category": "slot"
+        },
        {
          "name": "has_or_had_environmental_condition",
          "path": "modules/slots/has_or_had_environmental_condition.yaml",
@ -9447,6 +9452,11 @@
          "path": "modules/slots/has_or_had_notes.yaml",
          "category": "slot"
        },
+        {
+          "name": "has_or_had_observation_source_document",
+          "path": "modules/slots/has_or_had_observation_source_document.yaml",
+          "category": "slot"
+        },
        {
          "name": "has_or_had_open_access_endpoint",
          "path": "modules/slots/has_or_had_open_access_endpoint.yaml",
@ -9802,6 +9812,11 @@
          "path": "modules/slots/has_or_had_strategic_objective.yaml",
          "category": "slot"
        },
+        {
+          "name": "has_or_had_structured_description",
+          "path": "modules/slots/has_or_had_structured_description.yaml",
+          "category": "slot"
+        },
        {
          "name": "has_or_had_sub_collection",
          "path": "modules/slots/has_or_had_sub_collection.yaml",
--- a/frontend/public/schemas/20251121/linkml/modules/classes/CateringPlace.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/CateringPlace.yaml
@ -11,7 +11,7 @@ imports:
  # Shared slots (replacing catering_place_* slots per Rule 53)
  - ../slots/has_or_had_identifier
  - ../slots/has_or_had_label
-  - ../slots/has_or_had_description
+  - ../slots/has_or_had_structured_description
  - ./Label
  - ./Description
  # Domain-specific slots (kept)
@ -82,7 +82,7 @@ classes:
    - wd:Q30022
    slots:
    - has_or_had_accessibility_feature
-    - has_or_had_description  # was: catering_place_description - migrated per Rule 53
+    - has_or_had_structured_description  # was: catering_place_description - migrated per Rule 53
    - has_or_had_identifier   # was: catering_place_id - migrated per Rule 53
    - has_or_had_label        # was: catering_place_name - migrated per Rule 53
    - catering_price_range
@ -128,7 +128,7 @@ classes:
        - value:
            label_text: Van Gogh Museum Café
          description: Museum café
-      has_or_had_description:  # was: catering_place_description - migrated per Rule 53
+      has_or_had_structured_description:  # was: catering_place_description - migrated per Rule 53
        range: Description
        inlined: true
        description: A description of the catering place.
@ -261,7 +261,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/rijksmuseum-restaurant
        has_or_had_label:
          label_text: RIJKS Restaurant
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: Michelin-starred restaurant serving modern Dutch cuisine. Located in museum atrium with garden views.
        catering_type: RESTAURANT
        cuisine_type: Modern Dutch fine dining
@ -280,7 +280,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/na-cafe
        has_or_had_label:
          label_text: Nationaal Archief Café
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: Casual café for archive visitors. Light lunches, coffee, and pastries.
        catering_type: CAFE
        cuisine_type: Café fare, sandwiches, soups
@ -296,7 +296,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/cafe-americain
        has_or_had_label:
          label_text: Café Americain
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: Historic art deco café dating from 1902. Literary landmark and protected monument.
        catering_type: HISTORIC_CAFE
        heritage_type_classification: HISTORIC_RESTAURANT
--- a/frontend/public/schemas/20251121/linkml/modules/classes/ConservationLab.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/ConservationLab.yaml
@ -19,7 +19,7 @@ imports:
  # MIGRATED 2026-01-15: lab_* slots replaced with shared slots per Rule 53
  - ../slots/has_or_had_identifier  # was: lab_id
  - ../slots/has_or_had_label       # was: lab_name
-  - ../slots/has_or_had_description # was: lab_description
+  - ../slots/has_or_had_structured_description # was: lab_description
  - ./Label
  - ./Description
  - ../slots/safety_certification
@ -90,7 +90,7 @@ classes:
    # MIGRATED 2026-01-15: lab_* slots replaced with shared slots per Rule 53
    - has_or_had_identifier   # was: lab_id
    - has_or_had_label        # was: lab_name
-    - has_or_had_description  # was: lab_description
+    - has_or_had_structured_description  # was: lab_description
    - safety_certification
    - specificity_annotation
    - staff_count
@ -126,7 +126,7 @@ classes:
        - value:
            label_text: KB Preservation Laboratory
          description: Library preservation lab
-      has_or_had_description:  # was: lab_description
+      has_or_had_structured_description:  # was: lab_description
        range: Description
        inlined: true
        description: >-
@ -233,7 +233,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/rijksmuseum-conservation
        has_or_had_label:
          label_text: Rijksmuseum Conservation Studio
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: State-of-the-art conservation studio specializing in Dutch Golden Age paintings, works on paper, and decorative arts.
        conservation_specialization:
        - Paintings
@ -258,7 +258,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/na-restauratie
        has_or_had_label:
          label_text: Nationaal Archief Restauratie Atelier
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: Paper and parchment conservation workshop serving the national archives. Specializes in historical documents, maps, and seals.
        conservation_specialization:
        - Paper
--- a/frontend/public/schemas/20251121/linkml/modules/classes/Custodian.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/Custodian.yaml
@ -221,7 +221,6 @@ classes:
        range: string
        required: false
      legal_status:
-        range: uriorcurie
        required: false
      place_designation:
        range: CustodianPlace
--- a/frontend/public/schemas/20251121/linkml/modules/classes/CustodianLegalStatus.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/CustodianLegalStatus.yaml
@ -48,7 +48,7 @@ imports:
  - ../slots/dissolution_date
  - ../slots/temporal_extent
  - ../slots/is_or_was_suborganization_of  # was: parent_custodian - migrated per Rule 53 (2025-01-15)
-  - ../slots/legal_status
+  - ../slots/has_or_had_entity_status
  - ../slots/governance_structure
  - ../slots/reconstruction_method
  - ../slots/is_or_was_derived_from  # was: was_derived_from - migrated per Rule 53
@ -117,7 +117,7 @@ classes:
    - legal_form
    - legal_jurisdiction
    - legal_name
-    - legal_status
+    - has_or_had_entity_status
    - is_or_was_suborganization_of  # was: parent_custodian - migrated per Rule 53 (2025-01-15)
    - primary_register
    - reconstruction_method
@ -231,7 +231,7 @@ classes:
        description: |
          Parent organization in hierarchical structure.
          MIGRATED from parent_custodian slot per slot_fixes.yaml (Rule 53, 2025-01-15).
-      legal_status:
+      has_or_had_entity_status:
        range: LegalStatus
        required: true
        examples:
@ -353,7 +353,7 @@ classes:
            alpha_2: NL
            alpha_3: NLD
          legal_system_type: CIVIL_LAW
-        legal_status:
+        has_or_had_entity_status:
          status_code: ACTIVE
          status_name: Active
        is_or_was_derived_from:  # was: was_derived_from - migrated per Rule 53
--- a/frontend/public/schemas/20251121/linkml/modules/classes/Department.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/Department.yaml
@ -199,7 +199,6 @@ classes:
          - https://nde.nl/ontology/hc/collection/na-colonial-maps
          description: Collections managed by Colonial Records Dept
      located_at:
-        range: uriorcurie
        examples:
        - value: https://nde.nl/ontology/hc/aux-place/nationaal-archief-building-b
          description: Department located in Building B
--- a/frontend/public/schemas/20251121/linkml/modules/classes/EducationCenter.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/EducationCenter.yaml
@ -16,7 +16,7 @@ imports:
  # Shared slots (replacing education_center_* slots per Rule 53)
  - ../slots/has_or_had_identifier
  - ../slots/has_or_had_label
-  - ../slots/has_or_had_description
+  - ../slots/has_or_had_structured_description
  - ./Label
  - ./Description
  # Domain-specific slots (kept)
@ -95,7 +95,7 @@ classes:
    # MIGRATED 2026-01-15: education_center_* slots replaced with shared slots per Rule 53
    - has_or_had_identifier  # was: education_center_id
    - has_or_had_label       # was: education_center_name
-    - has_or_had_description # was: education_center_description
+    - has_or_had_structured_description # was: education_center_description
    - education_contact_email
    - education_type_classification
    - has_av_equipment
@ -135,7 +135,7 @@ classes:
        - value: |
            label_text: KB Workshops & Trainingen
          description: Library education facility
-      has_or_had_description:
+      has_or_had_structured_description:
        range: Description
        inlined: true
        description: A description of the education center.
@ -274,7 +274,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/rijksmuseum-education
        has_or_had_label:
          label_text: Rijksmuseum Educatie Centrum
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: Dedicated education facility offering school programs, family workshops, and teacher training.
        education_type_classification: EDUCATION_CENTER
        serves_or_served:  # was: target_audience - migrated per Rule 53
@ -306,7 +306,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/na-leercentrum
        has_or_had_label:
          label_text: Nationaal Archief Leercentrum
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: Learning center focused on historical research skills and genealogy.
        education_type_classification: RESOURCE_CENTER
        serves_or_served:  # was: target_audience - migrated per Rule 53
--- a/frontend/public/schemas/20251121/linkml/modules/classes/ExhibitionSpace.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/ExhibitionSpace.yaml
@ -12,7 +12,7 @@ imports:
  # Shared slots (replacing exhibition_space_* slots per Rule 53)
  - ../slots/has_or_had_identifier
  - ../slots/has_or_had_label
-  - ../slots/has_or_had_description
+  - ../slots/has_or_had_structured_description
  - ./Label
  - ./Description
  # Domain-specific slots (kept)
@ -89,7 +89,7 @@ classes:
    # MIGRATED 2026-01-15: exhibition_space_* slots replaced with shared slots per Rule 53
    - has_or_had_identifier  # was: exhibition_space_id
    - has_or_had_label       # was: exhibition_space_name
-    - has_or_had_description # was: exhibition_space_description
+    - has_or_had_structured_description # was: exhibition_space_description
    - exhibition_type
    - gallery_type_classification
    - has_climate_control
@ -128,7 +128,7 @@ classes:
        - value: |
            label_text: Van Gogh Museum Mesdag Collection
          description: Partner venue exhibition
-      has_or_had_description:
+      has_or_had_structured_description:
        range: Description
        inlined: true
        description: A description of the exhibition space.
@ -239,7 +239,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/rijksmuseum-schiphol-gallery
        has_or_had_label:
          label_text: Rijksmuseum Schiphol
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: Free gallery at Schiphol Airport featuring rotating highlights from the Rijksmuseum collection.
        exhibition_type: SATELLITE_GALLERY
        museum_type_classification: ART_MUSEUM
@ -259,7 +259,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/stedelijk-project-space
        has_or_had_label:
          label_text: Stedelijk Museum Bureau Amsterdam
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: Project space for emerging contemporary artists and experimental exhibitions.
        exhibition_type: PROJECT_SPACE
        gallery_type_classification: PROJECT_SPACE
--- a/frontend/public/schemas/20251121/linkml/modules/classes/GiftShop.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/GiftShop.yaml
@ -27,7 +27,7 @@ imports:
  # MIGRATED 2026-01-15: shop_* slots replaced with shared slots per Rule 53
  - ../slots/has_or_had_identifier  # was: shop_id
  - ../slots/has_or_had_label       # was: shop_name
-  - ../slots/has_or_had_description # was: shop_description
+  - ../slots/has_or_had_structured_description # was: shop_description
  - ./Label
  - ./Description
  - ../slots/shop_type
@ -86,7 +86,7 @@ classes:
      \   - Temporary retail for special exhibition\n   - Exhibition catalog, themed merchandise\n\n**Example - Rijksmuseum\
      \ Gift Shop**:\n```yaml\nCustodian:\n  hc_id: \"https://nde.nl/ontology/hc/nl-nh-ams-m-rm-q190804\"\n  preferred_label:\
      \ \"Rijksmuseum\"\n  gift_shop:\n    - has_or_had_identifier: \"https://nde.nl/ontology/hc/gift-shop/rijksmuseum-shop\"  # was: shop_id\n      has_or_had_label:  # was: shop_name\n        label_text:\
-      \ \"Rijksmuseum Shop\"\n      shop_type: MUSEUM_SHOP\n      has_or_had_description:  # was: shop_description\n        description_text: |\n          Award-winning museum shop offering\
+      \ \"Rijksmuseum Shop\"\n      shop_type: MUSEUM_SHOP\n      has_or_had_structured_description:  # was: shop_description\n        description_text: |\n          Award-winning museum shop offering\
      \ reproductions, design objects,\n          books, and exclusive Rijksmuseum merchandise.\n      physical_location:\n\
      \        - place_name: \"Rijksmuseum Shop - Main Hall\"\n          auxiliary_place_type: RETAIL_SPACE\n          street_address:\
      \ \"Museumstraat 1, Amsterdam\"\n      online_shop:\n        - platform_name: \"Rijksmuseum Online Shop\"\n        \
@ -122,7 +122,7 @@ classes:
    # MIGRATED 2026-01-15: shop_* slots replaced with shared slots per Rule 53
    - has_or_had_identifier   # was: shop_id
    - has_or_had_label        # was: shop_name
-    - has_or_had_description  # was: shop_description
+    - has_or_had_structured_description  # was: shop_description
    - shop_type
    - specificity_annotation
    - square_meters
@ -155,7 +155,7 @@ classes:
        - value:
            label_text: British Library Bookshop
          description: Library bookshop name
-      has_or_had_description:  # was: shop_description
+      has_or_had_structured_description:  # was: shop_description
        range: Description
        inlined: true
        description: A description of the gift shop.
@ -334,7 +334,7 @@ classes:
        has_or_had_label:  # was: shop_name
          label_text: Rijksmuseum Shop
        shop_type: MUSEUM_SHOP
-        has_or_had_description:  # was: shop_description
+        has_or_had_structured_description:  # was: shop_description
          description_text: Award-winning museum shop offering reproductions, design objects, books, and exclusive Rijksmuseum merchandise. Located in the redesigned entrance hall.
        physical_location:
        - place_name: Rijksmuseum Shop - Main Hall
@ -377,7 +377,7 @@ classes:
        has_or_had_label:  # was: shop_name
          label_text: British Library Shop
        shop_type: BOOKSHOP
-        has_or_had_description:  # was: shop_description
+        has_or_had_structured_description:  # was: shop_description
          description_text: Specialist bookshop focusing on rare book facsimiles, literary merchandise, and British Library publications.
        physical_location:
        - place_name: British Library Shop
@ -410,7 +410,7 @@ classes:
        has_or_had_label:  # was: shop_name
          label_text: Vermeer Exhibition Pop-up Shop
        shop_type: POP_UP
-        has_or_had_description:  # was: shop_description
+        has_or_had_structured_description:  # was: shop_description
          description_text: Temporary retail for the 2023 Vermeer exhibition with exclusive exhibition merchandise and catalog.
        physical_location:
        - place_name: Vermeer Exhibition Shop
--- a/frontend/public/schemas/20251121/linkml/modules/classes/GoogleMapsPlaywrightEnrichment.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/GoogleMapsPlaywrightEnrichment.yaml
@ -65,7 +65,7 @@ classes:
          description: Phone number
        website:
          slot_uri: hc:hasWebsite
-          range: string
+          range: uri  # FIXED 2026-01-16: was string, changed to uri for consistency
          description: Website URL (may be domain only)
          close_mappings:
            - schema:url
--- a/frontend/public/schemas/20251121/linkml/modules/classes/IntangibleHeritageForm.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/IntangibleHeritageForm.yaml
@ -21,7 +21,7 @@ imports:
  # MIGRATED 2026-01-15: heritage_form_* slots replaced with shared slots per Rule 53
  - ../slots/has_or_had_identifier  # was: heritage_form_id
  - ../slots/has_or_had_label       # was: heritage_form_name
-  - ../slots/has_or_had_description # was: heritage_form_description
+  - ../slots/has_or_had_structured_description # was: heritage_form_description
  - ./Label
  - ./Description
  - ../slots/kien_registration_date
@ -139,7 +139,7 @@ classes:
    - external_link
    - geographic_scope
    # MIGRATED 2026-01-15: heritage_form_* slots replaced with shared slots per Rule 53
-    - has_or_had_description  # was: heritage_form_description
+    - has_or_had_structured_description  # was: heritage_form_description
    - has_or_had_identifier   # was: heritage_form_id
    - has_or_had_label        # was: heritage_form_name
    - kien_registration_date
@ -197,7 +197,7 @@ classes:
            label_text: 1 aprilviering Brielle
        - value:
            label_text: Bloemencorso Bollenstreek
-      has_or_had_description:  # was: heritage_form_description
+      has_or_had_structured_description:  # was: heritage_form_description
        required: false
        range: Description
        inlined: true
@ -388,7 +388,7 @@ classes:
          label: "Pride Amsterdam"
        has_or_had_label:
          label_text: Pride Amsterdam
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: "Annual LGBTQ+ celebration featuring the Canal Parade through Amsterdam's historic canals. First held in 1996, it represents Dutch values of tolerance, equality, and freedom."
        # unesco_domain - MIGRATED to is_or_was_categorized_as (2026-01-14, Rule 53)
        is_or_was_categorized_as:
--- a/frontend/public/schemas/20251121/linkml/modules/classes/PersonObservation.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/PersonObservation.yaml
@ -42,6 +42,7 @@ imports:
  - ../slots/role_start_date
  - ../slots/role_end_date
  - ../slots/observation_source
+  - ../slots/has_or_had_observation_source_document
  - ../slots/is_or_was_affected_by_event
  - ../slots/contact_email
  - ../slots/expertise_area
@ -126,6 +127,7 @@ classes:
    - linkedin_profile_url
    - modified
    - observation_source
+    - has_or_had_observation_source_document
    - occupation
    - person_name
    - pronoun
@ -246,8 +248,13 @@ classes:
        range: date
        required: false
      observation_source:
+        range: string
+        required: false
+        description: Simple text reference to source (use has_or_had_observation_source_document for structured data)
+      has_or_had_observation_source_document:
        range: SourceDocument
        required: false
+        inlined: true
      is_or_was_affected_by_event:
        range: OrganizationalChangeEvent
        required: false
--- a/frontend/public/schemas/20251121/linkml/modules/classes/ProvenanceEvent.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/ProvenanceEvent.yaml
@ -36,7 +36,7 @@ imports:
  - ../slots/event_timespan
  - ../slots/footnote
  - ../slots/from_owner
-  # REMOVED 2026-01-15: from_owner_text - migrated to has_or_had_description (Rule 53, symmetry with to_owner_text)
+  # REMOVED 2026-01-15: from_owner_text - migrated to has_or_had_structured_description (Rule 53, symmetry with to_owner_text)
  - ../slots/lot_number
  - ../slots/nazi_era_flag
  - ../slots/price_text
@ -44,8 +44,7 @@ imports:
  - ../slots/specificity_annotation
  - ../slots/template_specificity
  - ../slots/to_owner
-  - ../slots/has_or_had_description  # was: to_owner_text - migrated per Rule 53 (2026-01-15)
-  - ./Description  # for has_or_had_description range
+  - ../slots/has_or_had_structured_description  # was: to_owner_text - migrated per Rule 53 (2026-01-15)
  # REMOVED 2026-01-15: transfer_location, transfer_location_text - migrated to event_location (Rule 53)
  - ../slots/event_location
  - ./SpecificityAnnotation
@ -96,7 +95,7 @@ classes:
    - event_type
    - footnote
    - from_owner
-    # MIGRATED 2026-01-15: from_owner_text → has_or_had_description (Rule 53, symmetry with to_owner_text)
+    # MIGRATED 2026-01-15: from_owner_text → has_or_had_structured_description (Rule 53, symmetry with to_owner_text)
    - lot_number
    - nazi_era_flag
    - object_ref
@ -108,7 +107,7 @@ classes:
    - specificity_annotation
    - template_specificity
    - to_owner
-    - has_or_had_description  # was: to_owner_text - migrated per Rule 53 (2026-01-15)
+    - has_or_had_structured_description  # was: to_owner_text - migrated per Rule 53 (2026-01-15)
    # MIGRATED 2026-01-15: transfer_location, transfer_location_text → event_location (Rule 53)
    - event_location
    slot_usage:
@ -169,7 +168,7 @@ classes:
        inlined: false
        examples:
        - value: https://nde.nl/ontology/hc/custodian/nl/mauritshuis
-      has_or_had_description:  # was: to_owner_text, from_owner_text - migrated per Rule 53 (2026-01-15)
+      has_or_had_structured_description:  # was: to_owner_text, from_owner_text - migrated per Rule 53 (2026-01-15)
        description: |
          Owner (source or destination) described as text when no structured entity exists.
          MIGRATED from to_owner_text and from_owner_text per slot_fixes.yaml (Rule 53, 2026-01-15).
@ -178,9 +177,7 @@ classes:
          - "from_owner": Previous owner (source of transfer)
          - "to_owner": New owner (destination of transfer)
        required: false
-        range: Description
        multivalued: true
-        inlined: true
        examples:
        # from_owner examples (migrated from from_owner_text)
        - value:
@ -361,8 +358,8 @@ classes:
        event_timespan:
          begin_of_the_begin: '1664-01-01'
          end_of_the_end: '1667-12-31'
-        # MIGRATED 2026-01-15: to_owner_text, from_owner_text → has_or_had_description (Rule 53)
-        has_or_had_description:
+        # MIGRATED 2026-01-15: to_owner_text, from_owner_text → has_or_had_structured_description (Rule 53)
+        has_or_had_structured_description:
          - description_text: Johannes Vermeer, Delft
            description_type: to_owner
        # MIGRATED 2026-01-15: transfer_location_text → event_location (Rule 53)
@ -377,8 +374,8 @@ classes:
        object_ref: https://nde.nl/ontology/hc/object/mauritshuis-girl-pearl-earring
        event_type: PURCHASE
        event_date_text: c. 1665-1674
-        # MIGRATED 2026-01-15: from_owner_text, to_owner_text → has_or_had_description (Rule 53)
-        has_or_had_description:
+        # MIGRATED 2026-01-15: from_owner_text, to_owner_text → has_or_had_structured_description (Rule 53)
+        has_or_had_structured_description:
          - description_text: Johannes Vermeer
            description_type: from_owner
          - description_text: Pieter van Ruijven, Delft (c. 1665-1674)
@ -395,8 +392,8 @@ classes:
        event_type: AUCTION
        event_date: '1696-05-16'
        event_date_text: May 16, 1696
-        # MIGRATED 2026-01-15: from_owner_text, to_owner_text → has_or_had_description (Rule 53)
-        has_or_had_description:
+        # MIGRATED 2026-01-15: from_owner_text, to_owner_text → has_or_had_structured_description (Rule 53)
+        has_or_had_structured_description:
          - description_text: Estate of Jacob Dissius
            description_type: from_owner
          - description_text: Unknown buyer
@ -421,8 +418,8 @@ classes:
        event_type: PURCHASE
        event_date: '1881-01-01'
        event_date_text: '1881'
-        # MIGRATED 2026-01-15: from_owner_text, to_owner_text → has_or_had_description (Rule 53)
-        has_or_had_description:
+        # MIGRATED 2026-01-15: from_owner_text, to_owner_text → has_or_had_structured_description (Rule 53)
+        has_or_had_structured_description:
          - description_text: Unknown seller
            description_type: from_owner
          - description_text: A.A. des Tombe, The Hague
@ -442,8 +439,8 @@ classes:
        event_type: BEQUEST
        event_date: '1903-01-01'
        event_date_text: '1903'
-        # MIGRATED 2026-01-15: from_owner_text → has_or_had_description (Rule 53)
-        has_or_had_description:
+        # MIGRATED 2026-01-15: from_owner_text → has_or_had_structured_description (Rule 53)
+        has_or_had_structured_description:
          - description_text: A.A. des Tombe (d. 1903)
            description_type: from_owner
          - description_text: Mauritshuis, The Hague
@ -460,8 +457,8 @@ classes:
        object_ref: https://nde.nl/ontology/hc/object/example-painting
        event_type: CONFISCATION
        event_date_text: '1938'
-        # MIGRATED 2026-01-15: from_owner_text, to_owner_text → has_or_had_description (Rule 53)
-        has_or_had_description:
+        # MIGRATED 2026-01-15: from_owner_text, to_owner_text → has_or_had_structured_description (Rule 53)
+        has_or_had_structured_description:
          - description_text: Jewish collector, Vienna
            description_type: from_owner
          - description_text: Nazi authorities
--- a/frontend/public/schemas/20251121/linkml/modules/classes/ProvenanceSources.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/ProvenanceSources.yaml
@ -99,7 +99,9 @@ classes:
          multivalued: true
          inlined_as_list: true
          description: Manual research source records
-        website:
+        # RENAMED 2026-01-16: website → website_source to resolve OWL ambiguous type warning
+        # (website is used elsewhere with range: uri, here it's range: SourceRecord)
+        website_source:
          slot_uri: hc:hasWebsiteSource
          range: SourceRecord
          multivalued: true
--- a/frontend/public/schemas/20251121/linkml/modules/classes/ReadingRoom.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/ReadingRoom.yaml
@ -10,7 +10,7 @@ imports:
  # MIGRATED 2026-01-15: reading_room_* slots replaced with shared slots per Rule 53
  - ../slots/has_or_had_identifier  # was: reading_room_id
  - ../slots/has_or_had_label       # was: reading_room_name
-  - ../slots/has_or_had_description # was: reading_room_description
+  - ../slots/has_or_had_structured_description # was: reading_room_description
  - ./Label
  - ./Description
  - ../slots/reading_room_type
@ -88,7 +88,7 @@ classes:
    - has_wifi
    - opening_hour
    # MIGRATED 2026-01-15: reading_room_* slots replaced with shared slots per Rule 53
-    - has_or_had_description  # was: reading_room_description
+    - has_or_had_structured_description  # was: reading_room_description
    - has_or_had_identifier   # was: reading_room_id
    - has_or_had_label        # was: reading_room_name
    - reading_room_type
@ -126,7 +126,7 @@ classes:
        - value:
            label_text: Stadsarchief Amsterdam Studiezaal
          description: City archive reading room
-      has_or_had_description:  # was: reading_room_description
+      has_or_had_structured_description:  # was: reading_room_description
        range: Description
        inlined: true
        description: A description of the reading room.
@ -253,7 +253,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/na-studiezaal
        has_or_had_label:
          label_text: Nationaal Archief Studiezaal
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: Main research room for consulting archival collections. Self-service retrieval from open stacks. Staff assistance available.
        reading_room_type: GENERAL
        seating_capacity: 80
@ -277,7 +277,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/kb-bijzondere-collecties
        has_or_had_label:
          label_text: KB Bijzondere Collecties Leeszaal
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: Special collections reading room for rare books, manuscripts, and incunabula. Supervised handling required.
        reading_room_type: SPECIAL_COLLECTIONS
        seating_capacity: 20
--- a/frontend/public/schemas/20251121/linkml/modules/classes/ResearchCenter.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/ResearchCenter.yaml
@ -20,7 +20,7 @@ imports:
  # MIGRATED 2026-01-15: research_center_* slots replaced with shared slots per Rule 53
  - ../slots/has_or_had_identifier  # was: research_center_id
  - ../slots/has_or_had_label       # was: research_center_name
-  - ../slots/has_or_had_description # was: research_center_description
+  - ../slots/has_or_had_structured_description # was: research_center_description
  - ./Label
  - ./Description
  - ../slots/research_center_type
@ -89,7 +89,7 @@ classes:
    - major_research_project
    - publication_series_name
    # MIGRATED 2026-01-15: research_center_* slots replaced with shared slots per Rule 53
-    - has_or_had_description  # was: research_center_description
+    - has_or_had_structured_description  # was: research_center_description
    - has_or_had_identifier   # was: research_center_id
    - has_or_had_label        # was: research_center_name
    - research_center_type
@ -124,7 +124,7 @@ classes:
        - value:
            label_text: NIOD Institute for War, Holocaust and Genocide Studies
          description: Specialized research institute
-      has_or_had_description:  # was: research_center_description
+      has_or_had_structured_description:  # was: research_center_description
        range: Description
        inlined: true
        description: A description of the research center.
@ -236,7 +236,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/rijksmuseum-research
        has_or_had_label:
          label_text: Rijksmuseum Research Department
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: Scholarly research on Dutch art and history, with focus on Golden Age. Publishes Rijksmuseum Bulletin and monograph series.
        research_center_type: RESEARCH_DEPARTMENT
        research_focus_area:
@ -269,7 +269,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/kb-dh-lab
        has_or_had_label:
          label_text: KB Lab - Digital Humanities
-        has_or_had_description:
+        has_or_had_structured_description:
          description_text: Digital humanities research facility focusing on computational approaches to library collections.
        research_center_type: DIGITAL_HUMANITIES_CENTER
        research_focus_area:
--- a/frontend/public/schemas/20251121/linkml/modules/classes/Storage.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/Storage.yaml
@ -50,8 +50,7 @@ imports:
  - ../slots/specificity_annotation
  - ../slots/standards_applied
  - ../slots/has_or_had_storage_condition
-  - ../slots/has_or_had_description  # was: storage_description - migrated per Rule 53
-  - ./Description
+  - ../slots/has_or_had_structured_description  # was: storage_description - migrated per Rule 53 (uses Description class)
  - ../slots/has_or_had_type
  - ../slots/has_or_had_storage_unit
  - ../slots/has_or_had_stores_collection
@ -126,7 +125,7 @@ classes:
    - specificity_annotation
    - standards_applied
    - has_or_had_storage_condition
-    - has_or_had_description  # was: storage_description - migrated per Rule 53
+    - has_or_had_structured_description  # was: storage_description - migrated per Rule 53 (uses Description class)
    - has_or_had_identifier  # was: storage_id - migrated per Rule 53
    - is_or_was_stored_at  # was: storage_location - migrated per Rule 53
    - has_or_had_label  # was: storage_name - migrated per Rule 53
@ -177,13 +176,11 @@ classes:
          description: Cold storage for film and photographic materials
        - value: ART_STORAGE
          description: Climate-controlled art storage
-      has_or_had_description:  # was: storage_description - migrated per Rule 53
+      has_or_had_structured_description:  # was: storage_description - migrated per Rule 53 (uses Description class)
        description: |
          Description of this storage facility.
          MIGRATED from storage_description per slot_fixes.yaml (Rule 53).
          Uses Description class with text and language support.
-        range: Description
-        inlined: true
        multivalued: true
        examples:
        - value: |
@ -309,7 +306,7 @@ classes:
          label_text: Depot Amersfoort
          language: nl
        has_or_had_type: ART_STORAGE
-        has_or_had_description:
+        has_or_had_structured_description:
          - description_text: 'Off-site storage depot for Rijksmuseum overflow collections. Climate-controlled facility housing paintings, sculptures, and decorative arts not currently on display.'
            description_type: storage
            language: en
@ -331,7 +328,7 @@ classes:
          label_text: Depot B - Cold Storage
          language: en
        has_or_had_type: COLD_STORAGE
-        has_or_had_description:
+        has_or_had_structured_description:
          - description_text: 'Refrigerated vault for film negatives, photographic materials, and temperature-sensitive documents. Maintained at 4°C, 35% RH.'
            description_type: storage
            language: en
--- a/frontend/public/schemas/20251121/linkml/modules/classes/StorageUnit.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/StorageUnit.yaml
@ -40,8 +40,7 @@ imports:
  - ../slots/stores_or_stored  # was: stores_object - migrated per Rule 53 (2026-01-15); range now HeritageObject
  - ./HeritageObject  # Added 2026-01-15 for stores_or_stored range
  - ../slots/template_specificity
-  - ../slots/has_or_had_description  # was: unit_description - migrated per Rule 53
-  - ./Description
+  - ../slots/has_or_had_structured_description  # was: unit_description - migrated per Rule 53 (uses Description class)
  # REMOVED - migrated to has_or_had_identifier (2026-01-14, Rule 53)
  # - ../slots/unit_id
  # - ../slots/unit_identifier
@ -104,7 +103,7 @@ classes:
    - specificity_annotation
    - stores_or_stored  # was: stores_object - migrated per Rule 53 (2026-01-15)
    - template_specificity
-    - has_or_had_description  # was: unit_description - migrated per Rule 53
+    - has_or_had_structured_description  # was: unit_description - migrated per Rule 53 (uses Description class)
    # REMOVED - migrated to has_or_had_identifier (2026-01-14, Rule 53)
    # - unit_id
    # - unit_identifier
@ -136,13 +135,11 @@ classes:
      unit_type:
        range: StorageUnitTypeEnum
        required: true
-      has_or_had_description:  # was: unit_description - migrated per Rule 53
+      has_or_had_structured_description:  # was: unit_description - migrated per Rule 53 (uses Description class)
        description: |
          Description of this storage unit.
          MIGRATED from unit_description per slot_fixes.yaml (Rule 53).
          Uses Description class with text and language support.
-        range: Description
-        inlined: true
        multivalued: true
      row_number:
        range: string
@ -225,7 +222,7 @@ classes:
        unit_identifier: NA-2024-BOX-00145
        unit_name: Archive Box 145 - WWII Ministry Records
        unit_type: ARCHIVE_BOX
-        has_or_had_description:
+        has_or_had_structured_description:
          - description_text: 'Acid-free archive box containing Ministry of Defense correspondence from 1940-1945. Handle with care.'
            description_type: unit
            language: en
@ -242,7 +239,7 @@ classes:
        unit_identifier: FF-MAPS-042
        unit_name: Flat File Drawer 42 - Netherlands Maps
        unit_type: FLAT_FILE_DRAWER
-        has_or_had_description:
+        has_or_had_structured_description:
          - description_text: 'Flat file drawer containing oversized maps of the Netherlands, 1850-1920. Climate-controlled environment.'
            description_type: unit
            language: en
--- a/frontend/public/schemas/20251121/linkml/modules/classes/TemporaryLocation.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/TemporaryLocation.yaml
@ -17,7 +17,7 @@ imports:
  #   temp_location_reason → has_or_had_rationale + reason_type (enum)
  - ../slots/has_or_had_identifier
  - ../slots/has_or_had_label
-  - ../slots/has_or_had_description
+  - ../slots/has_or_had_structured_description
  - ../slots/has_or_had_rationale
  - ../slots/has_or_had_type
  - ../slots/is_active
@ -84,7 +84,7 @@ classes:
    # temp_location_* slots REMOVED - migrated to generic slots (Rule 53, 2026-01-15)
    - has_or_had_identifier
    - has_or_had_label
-    - has_or_had_description
+    - has_or_had_structured_description
    - has_or_had_rationale
    - has_or_had_type
    - is_active
@ -124,7 +124,7 @@ classes:
          description: Traveling exhibition
        - value: Emergency Collection Storage - Watersnood 2024
          description: Emergency relocation
-      has_or_had_description:
+      has_or_had_structured_description:
        range: Description
        inlined: true
        description: Detailed description of the temporary location.
@ -229,7 +229,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/stedelijk-temp-2020
        has_or_had_label:
        - Stedelijk Museum Temporary Entrance
-        has_or_had_description:
+        has_or_had_structured_description:
        - description_text: Temporary entrance during main entrance renovation. Access via garden entrance.
          description_type: location
          language: en
@ -252,7 +252,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/rijksmuseum-popup-groningen
        has_or_had_label:
        - Rijksmuseum Pop-up Groningen
-        has_or_had_description:
+        has_or_had_structured_description:
        - description_text: Summer pop-up exhibition in Groninger Forum featuring highlights from the Golden Age collection.
          description_type: location
          language: en
@ -272,7 +272,7 @@ classes:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/emergency-storage-2024
        has_or_had_label:
        - Emergency Collection Storage - Watersnood 2024
-        has_or_had_description:
+        has_or_had_structured_description:
        - description_text: Emergency relocation of collection materials following flooding at main depot.
          description_type: location
          language: en
--- a/frontend/public/schemas/20251121/linkml/modules/classes/TransferEvent.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/TransferEvent.yaml
@ -30,7 +30,7 @@ imports:
  - ../slots/temporal_extent
  - ../slots/starts_or_started_at_location
  - ../slots/ends_or_ended_at_location
-  - ../slots/has_or_had_description
+  - ../slots/has_or_had_structured_description
  - ../slots/has_or_had_policy
  - ../slots/specificity_annotation
  - ../slots/template_specificity
@ -64,7 +64,7 @@ classes:
      - `starts_or_started_at_location`: Origin location
      - `ends_or_ended_at_location`: Destination location
      - `has_or_had_policy`: Transfer policy governing the transfer
-      - `has_or_had_description`: Narrative description
+      - `has_or_had_structured_description`: Narrative description
      
      **Replaces** (per slot_fixes.yaml):
      - `transfer_to_collection_date` (simple date)
@ -86,7 +86,7 @@ classes:
      - temporal_extent
      - starts_or_started_at_location
      - ends_or_ended_at_location
-      - has_or_had_description
+      - has_or_had_structured_description
      - has_or_had_policy
      - specificity_annotation
      - template_specificity
@ -110,7 +110,7 @@ classes:
        range: Location
        required: false
        inlined: true
-      has_or_had_description:
+      has_or_had_structured_description:
        description: |
          Narrative description of the transfer event.
        range: Description
@ -139,6 +139,6 @@ classes:
            location_name: "Old Storage Facility"
          ends_or_ended_at_location:
            location_name: "New Archive Building"
-          has_or_had_description:
+          has_or_had_structured_description:
            description_text: "Transfer of historical photographs to new climate-controlled facility"
        description: "Collection relocation transfer"
--- a/frontend/public/schemas/20251121/linkml/modules/classes/TransferPolicy.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/TransferPolicy.yaml
@ -24,7 +24,7 @@ imports:
  - ../metadata
  - ../slots/policy_name
  - ../slots/policy_text
-  - ../slots/has_or_had_description
+  - ../slots/has_or_had_structured_description
  - ../slots/specificity_annotation
  - ../slots/template_specificity
  - ./Description
@ -65,7 +65,7 @@ classes:
    slots:
      - policy_name
      - policy_text
-      - has_or_had_description
+      - has_or_had_structured_description
      - specificity_annotation
      - template_specificity
    
@ -80,7 +80,7 @@ classes:
          Full text of the policy.
        range: string
        required: false
-      has_or_had_description:
+      has_or_had_structured_description:
        description: |
          Summary description of the policy.
        range: Description
--- a/frontend/public/schemas/20251121/linkml/modules/classes/VideoSubtitle.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/VideoSubtitle.yaml
@ -16,7 +16,7 @@ imports:
  - ../slots/is_sdh
  - ../slots/raw_subtitle_content
  - ../slots/specificity_annotation
-  - ../slots/has_or_had_format  # was: subtitle_format - migrated per Rule 53 (2026-01-15)
+  - ../slots/has_or_had_format
  - ../slots/template_specificity
  - ../slots/has_or_had_identifier  # MIGRATED: was ../slots/track_id (2026-01-14)
  - ./TrackIdentifier  # Added for has_or_had_identifier migration
@ -241,7 +241,7 @@ classes:
    - is_sdh
    - raw_subtitle_content
    - specificity_annotation
-    - has_or_had_format  # was: subtitle_format - migrated per Rule 53 (2026-01-15)
+    - has_or_had_format
    - template_specificity
    - has_or_had_identifier  # MIGRATED: was track_id (2026-01-14)
    - has_or_had_label  # was: track_name
@ -250,10 +250,10 @@ classes:
        required: true
      includes_timestamp:
        ifabsent: 'true'
-      has_or_had_format:  # was: subtitle_format - migrated per Rule 53 (2026-01-15)
+      has_or_had_format:
        description: |
          The subtitle format for this video subtitle track.
-          Migrated from subtitle_format to align with RiC-O naming conventions.
+          Values: SRT, VTT, TTML, SBV, ASS
        range: SubtitleFormatEnum
        required: true
        examples:
--- a/frontend/public/schemas/20251121/linkml/modules/classes/VideoTranscript.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/VideoTranscript.yaml
@ -16,9 +16,8 @@ imports:
  - ../slots/speaker_count
  - ../slots/specificity_annotation
  - ../slots/template_specificity
-  # REMOVED 2026-01-14: ../slots/transcript_format - migrated to has_or_had_format with TranscriptFormat
+  # REMOVED 2026-01-14: ../slots/transcript_format - migrated to has_or_had_transcript_format with TranscriptFormat
  - ../slots/has_or_had_format
-  - ./TranscriptFormat
  - ./SpecificityAnnotation
  - ./TemplateSpecificityScores
  - ../enums/TranscriptFormatEnum
@ -82,7 +81,7 @@ classes:
    - speaker_count
    - specificity_annotation
    - template_specificity
-    # REMOVED 2026-01-14: transcript_format - migrated to has_or_had_format with TranscriptFormat
+    # REMOVED 2026-01-14: transcript_format - migrated to has_or_had_format with TranscriptFormatEnum
    - has_or_had_format
    slot_usage:
      full_text:
@ -105,7 +104,7 @@ classes:

            '
          description: Transcript with speaker labels
-      # REMOVED 2026-01-14: transcript_format - migrated to has_or_had_format with TranscriptFormat
+      # REMOVED 2026-01-14: transcript_format - migrated to has_or_had_format with TranscriptFormatEnum
      # transcript_format:
      #   range: TranscriptFormatEnum
      #   required: false
@ -114,7 +113,7 @@ classes:
      #   - value: STRUCTURED
      #     description: Text with speaker labels and paragraph breaks
      has_or_had_format:
-        range: TranscriptFormat
+        range: TranscriptFormatEnum
        required: false
        description: The format of the transcript (plain text, structured, timestamped, etc.)
        examples:
--- a/frontend/public/schemas/20251121/linkml/modules/classes/Warehouse.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/Warehouse.yaml
@ -15,19 +15,18 @@ imports:
  - ../slots/specificity_annotation
  - ../slots/template_specificity
  # Migrated per slot_fixes.yaml (Rule 53) - 2026-01-14
-  # warehouse_description → has_or_had_description + Description
+  # warehouse_description → has_or_had_structured_description + Description
  # warehouse_floor_area_sqm → has_or_had_area + Area
  # warehouse_id → has_or_had_identifier (uriorcurie range)
  # warehouse_managed_by → is_or_was_managed_by + Group
  # warehouse_name → has_or_had_label
  # warehouse_security_level → has_or_had_security_level + SecurityLevel
-  - ../slots/has_or_had_description
+  - ../slots/has_or_had_structured_description  # was: warehouse_description - uses Description class
  - ../slots/has_or_had_area
  - ../slots/has_or_had_identifier
  - ../slots/is_or_was_managed_by
  - ../slots/has_or_had_label
  - ../slots/has_or_had_security_level
-  - ./Description
  - ./Area
  - ./Group
  - ./SecurityLevel
@ -92,7 +91,7 @@ classes:
    - specificity_annotation
    - template_specificity
    # Migrated per slot_fixes.yaml (Rule 53) - 2026-01-14
-    - has_or_had_description   # was: warehouse_description
+    - has_or_had_structured_description   # was: warehouse_description (uses Description class)
    - has_or_had_area          # was: warehouse_floor_area_sqm
    - has_or_had_identifier    # was: warehouse_id
    - is_or_was_managed_by     # was: warehouse_managed_by
@ -124,12 +123,10 @@ classes:
          description: Museum logistics facility
        - value: KB Operations Warehouse Leiden
          description: Library operations warehouse
-      has_or_had_description:  # was: warehouse_description
+      has_or_had_structured_description:  # was: warehouse_description (uses Description class)
        description: |
          Description of warehouse purpose and contents.
          MIGRATED from warehouse_description per slot_fixes.yaml (Rule 53).
-        range: Description
-        inlined: true
        examples:
        - value:
            description_text: Logistics warehouse for exhibition equipment, packing materials, and furniture. Facilities team access only.
@ -241,7 +238,7 @@ classes:
    - value:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/rm-logistics-warehouse  # was: warehouse_id
        has_or_had_label: Rijksmuseum Logistics Warehouse  # was: warehouse_name
-        has_or_had_description:  # was: warehouse_description
+        has_or_had_structured_description:  # was: warehouse_description
          description_text: Logistics warehouse for exhibition equipment and packing materials. Used by exhibition services team.
          description_type: warehouse
        has_or_had_type: EXHIBITION_EQUIPMENT
@ -265,7 +262,7 @@ classes:
    - value:
        has_or_had_identifier: https://nde.nl/ontology/hc/aux/na-supplies-warehouse  # was: warehouse_id
        has_or_had_label: Nationaal Archief Supplies Warehouse  # was: warehouse_name
-        has_or_had_description:  # was: warehouse_description
+        has_or_had_structured_description:  # was: warehouse_description
          description_text: General supplies warehouse for archival boxes, office furniture, and operational materials.
          description_type: warehouse
        has_or_had_type: GENERAL_SUPPLIES
--- a/frontend/public/schemas/20251121/linkml/modules/classes/WebPortal.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/classes/WebPortal.yaml
@ -21,7 +21,7 @@ imports:
  - ../slots/metadata_standard
  - ../slots/sparql_endpoint
  - ../slots/oai_pmh_endpoint
-  - ../slots/identifier
+  - ../slots/external_identifier
  - ../slots/has_or_had_portal_data_source
  - ../slots/operated_by
  - ../slots/has_or_had_exposed_collection
@ -143,7 +143,7 @@ classes:
    - has_or_had_data_service_endpoint
    - has_or_had_exposed_collection
    - geographic_scope
-    - identifier
+    - external_identifier
    - implements_auxiliary_platform
    - implements_digital_platform
    - launch_date
@ -327,7 +327,7 @@ classes:
          description: 'Archieven.nl: 80+ archives'
        - value: 4000
          description: 'Europeana: 4000+ institutions'
-      identifier:
+      external_identifier:
        range: uriorcurie
        multivalued: true
        inlined_as_list: true
@ -496,7 +496,7 @@ classes:
        portal_status: ACTIVE
        record_count: 50000000
        participating_institutions: 4000
-        identifier:
+        external_identifier:
        - http://www.wikidata.org/entity/Q209441
        data_license_policy:
        - policy_id: https://nde.nl/ontology/hc/policy/europeana-data-exchange
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_entity_status.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_entity_status.yaml
@ -0,0 +1,64 @@
+# has_or_had_entity_status - Entity operational status slot
+#
+# Following RiC-O style naming convention (Rule 39):
+# - has_or_had_* indicates temporal relationship
+#
+# Created to resolve OWL ambiguous type warning on legal_status slot.
+# This slot is for LegalStatus objects (ACTIVE, DISSOLVED, etc.),
+# distinct from legal_status slot which links to CustodianLegalStatus.
+
+id: https://nde.nl/ontology/hc/slot/has_or_had_entity_status
+name: has_or_had_entity_status_slot
+title: Has Or Had Entity Status Slot
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  gleif_base: https://www.gleif.org/ontology/Base/
+  schema: http://schema.org/
+
+imports:
+  - linkml:types
+  - ../classes/RegistrationInfo  # Contains LegalStatus class
+
+default_prefix: hc
+
+slots:
+  has_or_had_entity_status:
+    slot_uri: hc:hasOrHadEntityStatus
+    range: LegalStatus
+    description: |
+      Current or past operational status of a legal entity.
+      
+      Links to LegalStatus with:
+      - status_code: ACTIVE, DISSOLVED, MERGED, SUSPENDED, etc.
+      - status_name: Human-readable status name
+      
+      **ONTOLOGY ALIGNMENT**:
+      
+      | Ontology | Property | Notes |
+      |----------|----------|-------|
+      | **GLEIF** | `gleif_base:hasEntityStatus` | Close - entity lifecycle status |
+      | **Schema.org** | `schema:status` | Related - general status |
+      
+      **DISTINCTION FROM legal_status SLOT**:
+      
+      | Slot | Range | Purpose |
+      |------|-------|---------|
+      | `legal_status` | `CustodianLegalStatus` | Links to legal entity object |
+      | `has_or_had_entity_status` | `LegalStatus` | Indicates operational status (ACTIVE/DISSOLVED) |
+      
+    required: true
+    close_mappings:
+      - gleif_base:hasEntityStatus
+    related_mappings:
+      - schema:status
+    examples:
+      - value:
+          status_code: ACTIVE
+          status_name: Active
+        description: Currently operating entity
+      - value:
+          status_code: DISSOLVED
+          status_name: Dissolved
+        description: Legally dissolved entity
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_format.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_format.yaml
@ -2,7 +2,8 @@
 #
 # Created per slot_fixes.yaml migration for: typical_response_formats, transcript_format
 # Creation date: 2026-01-14
-# Rule compliance: 39 (RiC-O naming), 50 (ontology mapping)
+# Updated: 2026-01-16 - Broadened range to uriorcurie per Rule 54
+# Rule compliance: 39 (RiC-O naming), 50 (ontology mapping), 54 (broaden range)

 id: https://nde.nl/ontology/hc/slot/has_or_had_format
 name: has_or_had_format
@ -16,7 +17,6 @@ prefixes:

 default_prefix: hc

-
 imports:
  - linkml:types

@ -32,19 +32,21 @@ slots:
      - File formats for documents (PDF, DOCX, TXT)
      - Media formats (JPEG, MP3, MP4)
      - Transcript formats (VTT, SRT, plain text)
+      - Subtitle formats (WebVTT, SRT, etc.)
      
      **ONTOLOGY ALIGNMENT**:
-      - **Primary** (`slot_uri`): `hc:hasOrHadFormat` - Heritage Custodian ObjectProperty
-        for class-valued format ranges
-      - **Close**: `dct:format` - Dublin Core format (DatatypeProperty)
+      - **Primary** (`slot_uri`): `hc:hasOrHadFormat` - Heritage Custodian property
+      - **Close**: `dct:format` - Dublin Core format
      - **Close**: `schema:encodingFormat` - Schema.org encoding format
      
-      **Note**: slot_uri changed from dct:format to hc:hasOrHadFormat (2026-01-16)
-      to allow class-valued ranges (SubtitleFormatEnum, TranscriptFormat).
+      **Range**: `uriorcurie` (Rule 54)
+      Broadened range to accept URI/CURIE references to format specifications.
+      This allows linking to IANA media types, format registries, or internal
+      format classes while resolving OWL ambiguous type warnings.
      
-      **Range**: `Any` (2026-01-16) - Allows string values and class instances.
+      Classes can narrow to specific format enums/classes via slot_usage.
      
-    range: string
+    range: uriorcurie
    multivalued: true
    
    close_mappings:
@ -52,13 +54,21 @@ slots:
      - schema:encodingFormat
    
    examples:
-      - value: "application/json"
-        description: JSON MIME type for API responses
-      - value: "text/vtt"
-        description: WebVTT subtitle/transcript format
-      - value: "image/jpeg"
-        description: JPEG image format
+      - value: "iana:application/json"
+        description: JSON MIME type for API responses (CURIE)
+      - value: "iana:text/vtt"
+        description: WebVTT subtitle/transcript format (CURIE)
+      - value: "hc:TranscriptFormat/STRUCTURED"
+        description: Structured transcript with speaker labels (internal CURIE)
+      - value: "https://www.iana.org/assignments/media-types/image/jpeg"
+        description: JPEG image format (full URI)
    
    annotations:
      custodian_types: '["*"]'
      custodian_types_rationale: "Format specifications applicable to all custodian types."
+      range_broadening_date: "2026-01-16"
+      range_broadening_rationale: |
+        Changed from range:string to range:uriorcurie per Rule 54.
+        This allows linking to IANA media types, format registries, or format classes
+        while resolving OWL ambiguous type warnings. Replaces need for bespoke slots
+        like has_or_had_transcript_format or has_or_had_subtitle_format.
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_hypernym.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_hypernym.yaml
@ -50,9 +50,13 @@ slots:
      to allow consistent class-valued ranges when classes override. skos:broader
      moved to exact_mappings (it is already an ObjectProperty in SKOS).
      
-      **Range**: `Any` (2026-01-16) - Allows uriorcurie values and class instances.
+      **Range**: `uriorcurie` (2026-01-16) - Allows both URIs and CURIE references.
      
-    range: string
+      Note: Individual Type classes may override to their specific type in slot_usage,
+      but since they're all referring to URIs, this causes no OWL ambiguity when
+      the base range is uriorcurie (compatible with ObjectProperty).
+      
+    range: uriorcurie
    required: false
    multivalued: false
    
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_hyponym.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_hyponym.yaml
@ -53,9 +53,13 @@ slots:
      to allow consistent class-valued ranges when classes override. skos:narrower
      moved to exact_mappings (it is already an ObjectProperty in SKOS).
      
-      **Range**: `Any` (2026-01-16) - Allows uriorcurie values and class instances.
+      **Range**: `uriorcurie` (2026-01-16) - Allows both URIs and CURIE references.
      
-    range: string
+      Note: Individual Type classes may override to their specific type in slot_usage,
+      but since they're all referring to URIs, this causes no OWL ambiguity when
+      the base range is uriorcurie (compatible with ObjectProperty).
+      
+    range: uriorcurie
    required: false
    multivalued: true
    inlined_as_list: true
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_label.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_label.yaml
@ -51,7 +51,7 @@ slots:
      
      **Range**: `Any` (2026-01-16) - Allows both string values and Label class instances.
      
-    range: string
+    range: uriorcurie
    required: false
    multivalued: true
    
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_observation_source_document.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_observation_source_document.yaml
@ -0,0 +1,67 @@
+# has_or_had_observation_source_document - Source document for observation
+#
+# Following RiC-O style naming convention (Rule 39):
+# - has_or_had_* indicates temporal relationship
+#
+# Created to resolve OWL ambiguous type warning on observation_source slot.
+# This slot is for SourceDocument objects (structured source references),
+# distinct from observation_source slot which uses string values.
+
+id: https://nde.nl/ontology/hc/slot/has_or_had_observation_source_document
+name: has_or_had_observation_source_document_slot
+title: Has Or Had Observation Source Document Slot
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  prov: http://www.w3.org/ns/prov#
+  dcterms: http://purl.org/dc/terms/
+
+imports:
+  - linkml:types
+  - ../classes/SourceDocument
+
+default_prefix: hc
+
+slots:
+  has_or_had_observation_source_document:
+    slot_uri: hc:hasOrHadObservationSourceDocument
+    range: SourceDocument
+    description: |
+      Structured source document where this observation was found.
+      
+      Links to SourceDocument with:
+      - source_type: "Staff directory", "Annual report", etc.
+      - source_uri: URL if available
+      - observation_date: When source was consulted
+      
+      **PiCo Pattern**: PersonObservation MUST link to source (evidence-based)
+      **PROV-O**: `prov:hadPrimarySource` for provenance tracking
+      
+      **Source Types**:
+      - Staff directory (online or print)
+      - Organizational chart
+      - Annual report
+      - Institutional website
+      - Archival personnel records
+      - Publication credits
+      - Email signature
+      
+      **DISTINCTION FROM observation_source SLOT**:
+      
+      | Slot | Range | Purpose |
+      |------|-------|---------|
+      | `observation_source` | `string` | Simple text reference to source |
+      | `has_or_had_observation_source_document` | `SourceDocument` | Structured source with metadata |
+      
+    required: false
+    close_mappings:
+      - prov:hadPrimarySource
+    related_mappings:
+      - dcterms:source
+    examples:
+      - value:
+          source_type: Staff directory
+          source_uri: https://example.org/staff
+          observation_date: "2025-01-10"
+        description: Staff directory source with structured metadata
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_rationale.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_rationale.yaml
@ -40,7 +40,7 @@ slots:
      **Note**: slot_uri changed from skos:note to hc:hasOrHadRationale (2026-01-16)
      to allow class-valued ranges when classes use Rationale class.
      
-    range: string
+    range: uriorcurie
    
    close_mappings:
      - skos:note
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_status.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_status.yaml
@ -23,7 +23,7 @@ default_prefix: hc
 slots:
  has_or_had_status:
    slot_uri: hc:hasOrHadStatus
-    range: string
+    range: uriorcurie
    description: |
      Current or past status of an entity.
      
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_structured_description.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_structured_description.yaml
@ -0,0 +1,62 @@
+# has_or_had_structured_description slot
+# Slot for structured Description class instances
+#
+# Following RiC-O naming convention (Rule 39): "hasOrHad..." pattern
+# for temporal relationships in heritage domain.
+#
+# Created to resolve OWL ambiguous type warning on has_or_had_description slot.
+# This slot is for Description class (structured descriptions with language/type),
+# distinct from has_or_had_description slot which uses string values.
+#
+# Generation date: 2026-01-16
+# Rule compliance: 38 (slot centralization + semantic URI), 39 (RiC-O naming), 42 (no prefix)
+
+id: https://nde.nl/ontology/hc/slot/has_or_had_structured_description
+name: has_or_had_structured_description_slot
+title: Has Or Had Structured Description Slot
+
+prefixes:
+  linkml: https://w3id.org/linkml/
+  hc: https://nde.nl/ontology/hc/
+  dcterms: http://purl.org/dc/terms/
+  skos: http://www.w3.org/2004/02/skos/core#
+
+default_prefix: hc
+
+imports:
+  - linkml:types
+  - ../classes/Description
+
+slots:
+  has_or_had_structured_description:
+    slot_uri: hc:hasOrHadStructuredDescription
+    range: Description
+    description: |
+      Structured description with language, type, and provenance metadata.
+      
+      **DISTINCTION FROM has_or_had_description SLOT**:
+      
+      | Slot | Range | Purpose |
+      |------|-------|---------|
+      | `has_or_had_description` | `string` | Simple text description |
+      | `has_or_had_structured_description` | `Description` | Typed description with metadata |
+      
+      **Temporal Semantics** (RiC-O Pattern):
+      The "hasOrHad" naming follows RiC-O convention indicating this relationship
+      may be historical - an entity's description may change over time.
+      
+      **Ontological Alignment**:
+      - **Primary** (`slot_uri`): `hc:hasOrHadStructuredDescription` - ObjectProperty
+      - **Close**: `dcterms:description` - Dublin Core (DatatypeProperty)
+      - **Close**: `skos:definition` - SKOS definition
+    required: false
+    inlined: true
+    close_mappings:
+      - dcterms:description
+      - skos:definition
+    examples:
+      - value:
+          description_text: "A historic reading room with original 19th century furnishings"
+          description_type: FACILITY
+          description_language: en
+        description: Structured facility description with language tag
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_type.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_type.yaml
@ -5,7 +5,8 @@
 # for temporal relationships in heritage domain.
 #
 # Generation date: 2026-01-13
-# Rule compliance: 38 (slot centralization + semantic URI), 39 (RiC-O naming), 42 (no prefix)
+# Updated: 2026-01-16 - Broadened range to uriorcurie per Rule 54
+# Rule compliance: 38, 39, 42, 53, 54 (broaden range, not bespoke predicates)

 id: https://nde.nl/ontology/hc/slot/has_or_had_type
 name: has_or_had_type_slot
@ -35,29 +36,25 @@ slots:
      may be historical - an entity may have been reclassified over time.
      
      **Ontological Alignment**:
-      - **Primary** (`slot_uri`): `hc:hasOrHadType` - Heritage Custodian ObjectProperty
-        allowing class-valued ranges for type hierarchies
+      - **Primary** (`slot_uri`): `hc:hasOrHadType` - Heritage Custodian property
      - **Exact**: `crm:P2_has_type` - CIDOC-CRM predicate for typing entities
-        (range: E55_Type, an ObjectProperty)
      - **Close**: `dcterms:type` - Dublin Core type predicate
      - **Related**: `schema:additionalType` - Schema.org for web semantics
      
      **Usage**:
      This is a GENERIC slot intended for reuse across multiple classes.
-      Classes should specialize the range in slot_usage to reference the
-      appropriate Type class hierarchy (e.g., StorageType, ZoneType, etc.).
+      Classes may narrow the range in slot_usage to reference specific Type class
+      hierarchies (e.g., StorageType, ZoneType, etc.).
+      
+      **Range**: `uriorcurie` (Rule 54)
+      Broadened range to accept URI/CURIE references to type concepts.
+      This resolves OWL "Ambiguous type" warnings while maintaining semantic richness.
+      Classes can still narrow to specific Type classes via slot_usage.
      
      **Cardinality**:
      Multivalued - entities may have multiple type classifications.
      
-      **Note**: slot_uri changed from crm:P2_has_type to hc:hasOrHadType (2026-01-16)
-      to resolve OWL ambiguous type warning when classes override range to class types.
-      crm:P2_has_type moved to exact_mappings (it is an ObjectProperty in CIDOC-CRM).
-      
-      **Range**: `Any` (2026-01-16) - Allows both string values and class instances.
-      Classes narrow this to specific Type class hierarchies via slot_usage.
-      
-    range: string
+    range: uriorcurie
    required: false
    multivalued: true
    inlined_as_list: true
@ -86,20 +83,27 @@ slots:
        zone_type, warehouse_type, unit_type, treatment_type, storage_type,
        statement_type, sub_guide_type, wikidata_mapping_type
      migration_date: "2026-01-13"
+      range_broadening_date: "2026-01-16"
+      range_broadening_rationale: |
+        Changed from range:string to range:uriorcurie per Rule 54.
+        This resolves OWL "Ambiguous type" warning while maintaining
+        semantic flexibility. Classes can narrow to specific Type classes
+        via slot_usage without causing DatatypeProperty/ObjectProperty ambiguity.
      predicate_clarification: |
-        slot_uri references a PREDICATE (crm:P2_has_type), not a class.
-        The range should be specialized per class to reference appropriate Type classes.
+        slot_uri references a PREDICATE (hc:hasOrHadType), not a class.
    
    comments:
      - "Generic type slot for reuse across multiple classes"
-      - "Specialize range in slot_usage for specific Type class hierarchies"
-      - "slot_uri=crm:P2_has_type is a PREDICATE, not a class"
+      - "Range: uriorcurie - accepts URI/CURIE references to type concepts"
+      - "slot_uri=hc:hasOrHadType is a PREDICATE, not a class"
      - "RiC-O naming: hasOrHad indicates potentially historical relationship"
      - "Multivalued: entities may have multiple type classifications"
-      - "Range: Any - resolves OWL ambiguous type warning (2026-01-16)"
+      - "Rule 54: Broadened range instead of creating bespoke predicates"
    
    examples:
-      - value: StorageType:ARCHIVE_DEPOT
-        description: "Storage typed as archive depot"
-      - value: ZoneType:CLIMATE_CONTROLLED
-        description: "Environmental zone type"
+      - value: "hc:StorageType/ARCHIVE_DEPOT"
+        description: "Storage typed as archive depot (CURIE reference)"
+      - value: "hc:ZoneType/CLIMATE_CONTROLLED"
+        description: "Environmental zone type (CURIE reference)"
+      - value: "https://example.org/vocab/historic-building"
+        description: "External vocabulary reference (full URI)"
--- a/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_url.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/has_or_had_url.yaml
@ -58,7 +58,7 @@ slots:
      
      **Range**: `Any` (2026-01-16) - Allows uri/string values and URL class instances.
      
-    range: URL
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    required: false
    multivalued: true
    inlined: true
--- a/frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_categorized_as.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_categorized_as.yaml
@ -37,7 +37,7 @@ slots:
      
      **Range**: `Any` (2026-01-16) - Allows uriorcurie values and class instances.
      
-    range: uriorcurie
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    multivalued: true
    
    exact_mappings:
--- a/frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_derived_from.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_derived_from.yaml
@ -37,7 +37,7 @@ slots:
      to resolve OWL ambiguous type warning when classes override range
      to class types (e.g., CustodianObservation).
      
-    range: uriorcurie
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    
    exact_mappings:
      - prov:wasDerivedFrom
--- a/frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_equivalent_to.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_equivalent_to.yaml
@ -55,7 +55,7 @@ slots:
      **Cardinality**:
      Multivalued - an entity may have equivalences in multiple systems.
      
-    range: string
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    required: false
    multivalued: true
    inlined_as_list: true
--- a/frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_generated_by.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_generated_by.yaml
@ -37,7 +37,7 @@ slots:
      to resolve OWL ambiguous type warning when classes override range
      to class types (e.g., ReconstructionActivity).
      
-    range: uriorcurie
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    
    exact_mappings:
      - prov:wasGeneratedBy
--- a/frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_instance_of.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_instance_of.yaml
@ -60,7 +60,7 @@ slots:
      **Cardinality**:
      Multivalued - entities may have multiple classifications.
      
-    range: string
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    required: false
    multivalued: true
    inlined_as_list: true
--- a/frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_related_to.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/is_or_was_related_to.yaml
@ -62,7 +62,7 @@ slots:
      **Cardinality**:
      Multivalued - an entity may have multiple associations.
      
-    range: string
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    required: false
    multivalued: true
    inlined_as_list: true
--- a/frontend/public/schemas/20251121/linkml/modules/slots/slot_fixes.yaml
+++ b/frontend/public/schemas/20251121/linkml/modules/slots/slot_fixes.yaml
@ -5669,4 +5669,214 @@ fixes:
      using Description class with description_type: from_owner. Migrated for symmetry
      with to_owner_text which was migrated earlier in same session. Owner class not
      used (existing from_owner slot provides structured reference). Original slot
-      archived to archive/from_owner_text_archived_20260115.yaml.'
+      archived to archive/from_owner_text_archived_20260115.yaml.'
+- original_slot_id: https://nde.nl/ontology/hc/slot/about_text
+  revision:
+    - label: has_or_had_description
+      type: slot
+    - label: Description
+      type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/address_type
+  revision:
+  - label: has_or_had_address 
+    type: slot
+  - label: Address
+    type: class
+  - label: has_or_had_type
+    type: slot
+  - label: AddressType
+    type: class
+  - label: includes_or_included
+    type: slot
+  - label: AddressTypes
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/algorithm_name
+  revision:
+  - label: has_or_had_label
+    type: slot
+  - label: Label
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/algorithm_version
+  revision:
+  - label: has_or_had_version
+    type: slot
+  - label: Version
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/amount
+  revision:
+  - label: has_or_had_quantity
+    type: slot
+  - label: Quantity
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/applies_or_applied_to_call
+  revision:
+  - label: applies_or_applied_to
+    type: slot
+  - label: CallForApplication
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/approximation_level
+  revision:
+  - label: has_or_had_level
+    type: slot
+  - label: ApproximationLevel
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/archival_reference
+  revision:
+  - label: has_or_had_provenance
+    type: slot
+  - label: Provenance
+    type: class
+  - label: has_or_had_reference
+    type: slot
+  - label: Reference
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/area_value
+  revision:
+  - label: has_or_had_area
+    type: slot
+  - label: Area
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/arrangement_level
+  revision:
+  - label: has_or_had_level
+    type: slot
+  - label: ArrangementLevel
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/asserter_contact
+  revision:
+  - label: has_or_had_contact_person
+    type: slot
+  - label: ContactPerson
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/asserter_type
+  revision:
+  - label: has_or_had_type
+    type: slot
+  - label: AsserterType
+    type: class
+  - label: includes_or_included
+    type: slot
+  - label: AsserterTypes
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/asserter_version
+  revision:
+  - label: has_or_had_version
+    type: slot
+  - label: Version
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/assessment_date
+  revision:
+   - label: is_or_was_assessed
+     type: slot
+   - label: Assessment
+     type: class
+   - label: temporal_extent
+     type: slot
+   - label: TimeSpan
+     type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/audience_size
+  revision:
+  - label: serves_or_served 
+    type: slot
+  - label: UserCommunity
+    type: class
+  - label: has_or_had_quantity
+    type: slot
+  - label: AudienceSize
+    type: class
+  - label: has_or_had_unit
+    type: slot
+  - label: MeasurementUnit
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/audience_type
+  revision:
+    - label: serves_or_served 
+      type: slot
+    - label: UserCommunity
+      type: class
+    - label: has_or_had_type
+      type: slot
+    - label: UserCommunityType
+      type: class
+    - label: includes_or_included
+      type: slot
+    - label: UserCommunityTypes
+      type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/audio_quality_score
+  revision:
+  - label: has_or_had_audio 
+    type: slot
+  - label: Audio
+    type: class
+  - label: has_or_had_score
+    type: slot
+  - label: QualityScore
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/audit_date
+  revision:
+  - label: is_or_was_audited
+    type: slot
+  - label: AuditEvent
+    type: class
+  - label: temporal_extent
+    type: slot
+  - label: TimeSpan
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/audit_opinion
+  revision:
+  - label: is_or_was_audited
+    type: slot
+  - label: AuditEvent
+    type: class
+  - label: concludes_or_concluded
+    type: slot
+  - label: AuditOpinion
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/audit_status
+  revision:
+  - label: is_or_was_audited
+    type: slot
+  - label: AuditEvent
+    type: class
+  - label: has_or_had_status
+    type: slot
+  - label: AuditStatus
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/auditor_name
+  revision:
+  - label: is_or_was_audited
+    type: slot
+  - label: AuditEvent
+    type: class
+  - label: is_or_was_conducted_by
+    type: slot
+  - label: Auditor
+    type: class
+  - label: has_or_had_name
+    type: slot
+  - label: Name
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/author_affiliation
+  revision:
+  - label: is_or_was_affiliated_with
+    type: slot
+  - label: Affiliation
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/author_identifier
+  revision:
+  - label: has_or_had_identifier
+    type: slot
+  - label: Identifier
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/author_name
+  revision:
+  - label: has_or_had_name
+    type: slot
+  - label: Name
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/author_role
+  revision:
+  - label: has_or_had_role
+    type: slot
+  - label: AuthorRole
+    type: class
--- a/frontend/public/schemas/20251121/linkml/scripts/gen-heritage-owl.sh
+++ b/frontend/public/schemas/20251121/linkml/scripts/gen-heritage-owl.sh
@ -0,0 +1,40 @@
+#!/bin/bash
+# gen-heritage-owl.sh - Generate OWL ontology from Heritage Custodian LinkML schema
+#
+# Usage:
+#   ./scripts/gen-heritage-owl.sh [output-file] [additional-args...]
+#
+# Examples:
+#   ./scripts/gen-heritage-owl.sh                           # Output to stdout
+#   ./scripts/gen-heritage-owl.sh heritage_custodian.owl    # Output to file
+#   ./scripts/gen-heritage-owl.sh -f ttl                    # Turtle format
+#
+# Why --type-objects is required:
+#   The Heritage Custodian schema uses generic slots (e.g., has_or_had_type,
+#   has_or_had_format) with `range: uriorcurie` that are narrowed by classes
+#   via slot_usage. While the range broadening to uriorcurie resolves most
+#   OWL ambiguity warnings, using --type-objects ensures consistent
+#   ObjectProperty treatment for all polymorphic slots.
+#
+# See also:
+#   - Rule 55: Broaden Generic Predicate Ranges (.opencode/rules/broaden-generic-predicate-ranges-rule.md)
+#   - Rule 53: Full Slot Migration (slot_fixes.yaml)
+#
+# Created: 2026-01-16
+# Updated: 2026-01-16
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+SCHEMA_DIR="$(dirname "$SCRIPT_DIR")"
+SCHEMA_FILE="${SCHEMA_DIR}/01_custodian_name_modular.yaml"
+
+if [[ ! -f "$SCHEMA_FILE" ]]; then
+    echo "Error: Schema file not found: $SCHEMA_FILE" >&2
+    exit 1
+fi
+
+# Run gen-owl with --type-objects flag
+# This treats types as objects (ObjectProperty) rather than literals (DatatypeProperty)
+# which matches our polymorphic slot design pattern
+exec gen-owl --type-objects "$SCHEMA_FILE" "$@"
--- a/frontend/src/pages/EntityReviewPage.css
+++ b/frontend/src/pages/EntityReviewPage.css
@ -381,6 +381,19 @@
  color: #f59e0b;
 }

+.stat-card.info .stat-value {
+  color: #3b82f6;
+}
+
+.stat-card.info.active {
+  border-color: #3b82f6;
+  background: rgba(59, 130, 246, 0.1);
+}
+
+.dark .stat-card.info.active {
+  background: rgba(59, 130, 246, 0.15);
+}
+
 .stat-card.progress {
  position: relative;
 }
@ -2121,3 +2134,118 @@
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
 }
+
+/* WCMS-Only Profiles Styles */
+.wcms-only-search {
+  position: relative;
+  padding: 0.75rem;
+  border-bottom: 1px solid var(--border-color, #e0e0e0);
+}
+
+.wcms-only-search .search-input {
+  width: 100%;
+  padding: 0.5rem 2rem 0.5rem 0.75rem;
+  border: 1px solid var(--border-color, #e0e0e0);
+  border-radius: 6px;
+  font-size: 0.875rem;
+  background: var(--bg-primary, #fff);
+  color: var(--text-primary, #1a1a1a);
+}
+
+.wcms-only-search .search-input:focus {
+  outline: none;
+  border-color: #3b82f6;
+  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
+}
+
+.wcms-only-search .clear-search {
+  position: absolute;
+  right: 1rem;
+  top: 50%;
+  transform: translateY(-50%);
+  background: none;
+  border: none;
+  color: var(--text-secondary, #666);
+  cursor: pointer;
+  padding: 0.25rem;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.wcms-only-search .clear-search:hover {
+  color: var(--text-primary, #1a1a1a);
+}
+
+.wcms-only-list .profile-item {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+  padding: 0.75rem 1rem;
+}
+
+.profile-item-actions {
+  display: flex;
+  gap: 0.5rem;
+  margin-top: 0.25rem;
+}
+
+.linkedin-search-btn {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.35rem;
+  padding: 0.35rem 0.75rem;
+  background: linear-gradient(135deg, #0077b5 0%, #005885 100%);
+  color: white;
+  border: none;
+  border-radius: 4px;
+  font-size: 0.75rem;
+  font-weight: 500;
+  cursor: pointer;
+  transition: all 0.2s ease;
+}
+
+.linkedin-search-btn:hover {
+  background: linear-gradient(135deg, #005885 0%, #004266 100%);
+  transform: translateY(-1px);
+  box-shadow: 0 2px 8px rgba(0, 119, 181, 0.3);
+}
+
+.status-badge {
+  font-size: 0.65rem;
+  padding: 0.15rem 0.4rem;
+  border-radius: 3px;
+  font-weight: 500;
+  text-transform: uppercase;
+}
+
+.status-badge.active {
+  background: rgba(34, 197, 94, 0.15);
+  color: #16a34a;
+}
+
+.status-badge.blocked {
+  background: rgba(239, 68, 68, 0.15);
+  color: #dc2626;
+}
+
+.dark .status-badge.active {
+  background: rgba(34, 197, 94, 0.2);
+  color: #4ade80;
+}
+
+.dark .status-badge.blocked {
+  background: rgba(239, 68, 68, 0.2);
+  color: #f87171;
+}
+
+.date-badge {
+  font-size: 0.7rem;
+  color: var(--text-secondary, #666);
+}
+
+.pagination-info {
+  font-size: 0.8rem;
+  color: var(--text-secondary, #666);
+  padding: 0 0.5rem;
+}
--- a/frontend/src/pages/EntityReviewPage.tsx
+++ b/frontend/src/pages/EntityReviewPage.tsx
@ -585,6 +585,38 @@ export default function EntityReviewPage() {
    }
  }, [fetchProfiles, fetchStats, fetchSignalTypes, isAuthenticated]);

+  // Fetch WCMS-only profiles when that filter is selected
+  useEffect(() => {
+    if (!isAuthenticated || statsFilter !== 'wcms_only') return;
+    
+    const fetchWcmsOnlyProfiles = async () => {
+      setWcmsOnlyLoading(true);
+      try {
+        const params = new URLSearchParams({
+          page: wcmsOnlyPage.toString(),
+          page_size: '50',
+        });
+        if (wcmsOnlySearch.trim()) {
+          params.append('search', wcmsOnlySearch.trim());
+        }
+        
+        const response = await fetch(`${API_BASE}/api/review/wcms-only?${params}`);
+        if (!response.ok) throw new Error('Failed to fetch WCMS-only profiles');
+        const data = await response.json();
+        setWcmsOnlyProfiles(data.profiles || []);
+        setWcmsOnlyTotal(data.total || 0);
+      } catch (err) {
+        console.error('Failed to fetch WCMS-only profiles:', err);
+        setWcmsOnlyProfiles([]);
+        setWcmsOnlyTotal(0);
+      } finally {
+        setWcmsOnlyLoading(false);
+      }
+    };
+    
+    fetchWcmsOnlyProfiles();
+  }, [isAuthenticated, statsFilter, wcmsOnlyPage, wcmsOnlySearch]);
+
  // Keyboard shortcuts
  useEffect(() => {
    const handleKeyDown = (e: KeyboardEvent) => {
@ -814,6 +846,15 @@ export default function EntityReviewPage() {
              <span className="stat-label">In afwachting</span>
            </div>
          </Tooltip>
+          <Tooltip content={language === 'nl' ? 'WCMS profielen zonder LinkedIn kandidaten - klaar voor zoeken' : 'WCMS profiles without LinkedIn candidates - ready for search'} position="bottom">
+            <div 
+              className={`stat-card info clickable ${statsFilter === 'wcms_only' ? 'active' : ''}`}
+              onClick={() => { setStatsFilter('wcms_only'); setWcmsOnlyPage(1); }}
+            >
+              <span className="stat-value">{(stats.wcms_only_count || 0).toLocaleString()}</span>
+              <span className="stat-label">Zoek LinkedIn</span>
+            </div>
+          </Tooltip>
          {stats.likely_wrong_person !== undefined && stats.likely_wrong_person > 0 && (
            <Tooltip content={t('wrongPersonWarning')} position="bottom">
              <div className="stat-card danger">
@ -1165,6 +1206,147 @@ export default function EntityReviewPage() {
              <Search size={32} />
              <span>{language === 'nl' ? 'Geen resultaten gevonden' : 'No results found'}</span>
            </div>
+          ) : statsFilter === 'wcms_only' ? (
+            /* WCMS-Only Profiles View */
+            <>
+              {/* Search Input for WCMS-only */}
+              <div className="wcms-only-search">
+                <input
+                  type="text"
+                  placeholder={language === 'nl' ? 'Zoek op naam of email...' : 'Search by name or email...'}
+                  value={wcmsOnlySearch}
+                  onChange={(e) => {
+                    setWcmsOnlySearch(e.target.value);
+                    setWcmsOnlyPage(1);
+                  }}
+                  className="search-input"
+                />
+                {wcmsOnlySearch && (
+                  <button 
+                    className="clear-search"
+                    onClick={() => {
+                      setWcmsOnlySearch('');
+                      setWcmsOnlyPage(1);
+                    }}
+                    title={language === 'nl' ? 'Wissen' : 'Clear'}
+                  >
+                    <X size={14} />
+                  </button>
+                )}
+              </div>
+              
+              {/* Results count */}
+              {!wcmsOnlyLoading && wcmsOnlyTotal > 0 && (
+                <div className="search-stats">
+                  <span>{wcmsOnlyTotal.toLocaleString()} {language === 'nl' ? 'profielen zonder LinkedIn' : 'profiles without LinkedIn'}</span>
+                </div>
+              )}
+              
+              {wcmsOnlyLoading ? (
+                <div className="loading-state">
+                  <Loader2 className="animate-spin" size={24} />
+                  <span>{language === 'nl' ? 'Laden...' : 'Loading...'}</span>
+                </div>
+              ) : wcmsOnlyProfiles.length === 0 ? (
+                <div className="empty-state">
+                  <Database size={32} />
+                  <span>{language === 'nl' ? 'Geen profielen gevonden' : 'No profiles found'}</span>
+                </div>
+              ) : (
+                <>
+                  <ul className="profile-list wcms-only-list">
+                    {wcmsOnlyProfiles.map((profile, idx) => (
+                      <li 
+                        key={profile.user_id || profile.email || `wcms-only-${idx}`}
+                        className="profile-item wcms-only-item"
+                      >
+                        <div className="profile-item-header">
+                          <User size={16} />
+                          <span className="profile-name">{profile.name || profile.username || 'Unknown'}</span>
+                          {profile.status && (
+                            <span className={`status-badge ${profile.status.toLowerCase()}`}>
+                              {profile.status}
+                            </span>
+                          )}
+                        </div>
+                        <div className="profile-item-meta">
+                          {profile.email && (
+                            <span className="email-badge" title={profile.email}>
+                              <Mail size={12} />
+                              {profile.email}
+                            </span>
+                          )}
+                          {profile.abs_id && (
+                            <span className="wcms-id-badge" title={`ABS ID: ${profile.abs_id}`}>
+                              ID: {profile.abs_id}
+                            </span>
+                          )}
+                          {profile.registered_since && (
+                            <span className="date-badge" title={`Registered: ${profile.registered_since}`}>
+                              {profile.registered_since}
+                            </span>
+                          )}
+                        </div>
+                        <div className="profile-item-actions">
+                          <button
+                            className="linkedin-search-btn"
+                            onClick={() => {
+                              const searchQuery = encodeURIComponent(profile.name || profile.username || profile.email || '');
+                              window.open(`https://www.linkedin.com/search/results/all/?keywords=${searchQuery}`, '_blank');
+                            }}
+                            title={language === 'nl' ? 'Zoek op LinkedIn' : 'Search on LinkedIn'}
+                          >
+                            <Search size={14} />
+                            <span>LinkedIn</span>
+                          </button>
+                        </div>
+                      </li>
+                    ))}
+                  </ul>
+                  
+                  {/* Pagination for WCMS-only */}
+                  <div className="pagination">
+                    <button 
+                      onClick={() => setWcmsOnlyPage(1)}
+                      disabled={wcmsOnlyPage === 1}
+                      title="First page"
+                      className="pagination-btn"
+                    >
+                      <ChevronLeft size={14} />
+                      <ChevronLeft size={14} style={{ marginLeft: -8 }} />
+                    </button>
+                    <button 
+                      onClick={() => setWcmsOnlyPage(p => Math.max(1, p - 1))}
+                      disabled={wcmsOnlyPage === 1}
+                      title="Previous page"
+                      className="pagination-btn"
+                    >
+                      <ChevronLeft size={16} />
+                    </button>
+                    <span className="pagination-info">
+                      {wcmsOnlyPage} / {Math.ceil(wcmsOnlyTotal / 50)}
+                    </span>
+                    <button 
+                      onClick={() => setWcmsOnlyPage(p => Math.min(Math.ceil(wcmsOnlyTotal / 50), p + 1))}
+                      disabled={wcmsOnlyPage >= Math.ceil(wcmsOnlyTotal / 50)}
+                      title="Next page"
+                      className="pagination-btn"
+                    >
+                      <ChevronRight size={16} />
+                    </button>
+                    <button 
+                      onClick={() => setWcmsOnlyPage(Math.ceil(wcmsOnlyTotal / 50))}
+                      disabled={wcmsOnlyPage >= Math.ceil(wcmsOnlyTotal / 50)}
+                      title="Last page"
+                      className="pagination-btn"
+                    >
+                      <ChevronRight size={14} />
+                      <ChevronRight size={14} style={{ marginLeft: -8 }} />
+                    </button>
+                  </div>
+                </>
+              )}
+            </>
          ) : loading ? (
            <div className="loading-state">
              <Loader2 className="animate-spin" size={24} />
--- a/schemas/20251121/linkml/manifest.json
+++ b/schemas/20251121/linkml/manifest.json
@ -1,5 +1,5 @@
 {
-  "generated": "2026-01-16T14:04:19.745Z",
+  "generated": "2026-01-16T14:06:37.301Z",
  "schemaRoot": "/schemas/20251121/linkml",
  "totalFiles": 3010,
  "categoryCounts": {
--- a/schemas/20251121/linkml/modules/classes/TypeClass.yaml
+++ b/schemas/20251121/linkml/modules/classes/TypeClass.yaml
@ -1,61 +0,0 @@
-# TypeClass - Abstract base class for all type classification classes
-#
-# This class serves as the common ancestor for all *Type classes in the heritage ontology.
-# It enables the `any_of` pattern in generic slots like `has_or_had_type` to accept
-# both string values and class instances, resolving OWL "Ambiguous type" warnings.
-#
-# Rule compliance:
-# - Rule 53: Enables generic slots via any_of pattern
-# - Rule 39: Supports RiC-O temporal naming convention
-# - Rule 0b: Part of Type/Types naming convention
-#
-# Generation date: 2026-01-16
-# Purpose: Resolve 18 OWL ambiguous type warnings from gen-owl
-
-id: https://nde.nl/ontology/hc/class/TypeClass
-name: type_class
-title: Type Class (Abstract Base)
-
-prefixes:
-  linkml: https://w3id.org/linkml/
-  hc: https://nde.nl/ontology/hc/
-  skos: http://www.w3.org/2004/02/skos/core#
-
-default_prefix: hc
-
-imports:
-  - linkml:types
-
-classes:
-  TypeClass:
-    class_uri: skos:Concept
-    abstract: true
-    description: |
-      Abstract base class for all type classification classes in the heritage ontology.
-      
-      **Purpose**:
-      Enables the `any_of` pattern in generic slots (e.g., `has_or_had_type`) to accept
-      both string literals and class instances. This resolves OWL "Ambiguous type" 
-      warnings that occur when slots have `range: string` but classes override to 
-      class types via `slot_usage`.
-      
-      **Inheritance**:
-      All concrete Type classes (AddressType, BackupType, ConditionType, etc.) 
-      should inherit from this class using `is_a: TypeClass`.
-      
-      **Ontological Alignment**:
-      - class_uri: `skos:Concept` - Type classes represent controlled vocabulary concepts
-      
-      **See Also**:
-      - Rule 0b: LinkML Type/Types File Naming Convention
-      - Rule 53: No bespoke slots - generic/reusable patterns
-    
-    annotations:
-      specificity_score: 0.10
-      specificity_rationale: |
-        Very low specificity - this is a foundational abstract class used as the
-        base for all type classification classes across the entire ontology.
-      owl_fix_date: "2026-01-16"
-      owl_fix_purpose: |
-        Created to resolve 18 "Ambiguous type" warnings from gen-owl.
-        Serves as range in any_of patterns for generic slots.
--- a/schemas/20251121/linkml/modules/classes/VideoSubtitle.yaml
+++ b/schemas/20251121/linkml/modules/classes/VideoSubtitle.yaml
@ -16,7 +16,7 @@ imports:
  - ../slots/is_sdh
  - ../slots/raw_subtitle_content
  - ../slots/specificity_annotation
-  - ../slots/has_or_had_subtitle_format  # was: has_or_had_format - specialized for SubtitleFormatEnum (2026-01-16)
+  - ../slots/has_or_had_format
  - ../slots/template_specificity
  - ../slots/has_or_had_identifier  # MIGRATED: was ../slots/track_id (2026-01-14)
  - ./TrackIdentifier  # Added for has_or_had_identifier migration
@ -241,7 +241,7 @@ classes:
    - is_sdh
    - raw_subtitle_content
    - specificity_annotation
-    - has_or_had_subtitle_format  # was: has_or_had_format - specialized for SubtitleFormatEnum (2026-01-16)
+    - has_or_had_format
    - template_specificity
    - has_or_had_identifier  # MIGRATED: was track_id (2026-01-14)
    - has_or_had_label  # was: track_name
@ -250,11 +250,11 @@ classes:
        required: true
      includes_timestamp:
        ifabsent: 'true'
-      has_or_had_subtitle_format:  # was: has_or_had_format - specialized for SubtitleFormatEnum (2026-01-16)
+      has_or_had_format:
        description: |
          The subtitle format for this video subtitle track.
-          Migrated from subtitle_format to align with RiC-O naming conventions.
-        # range: SubtitleFormatEnum - defined in slot, no override needed
+          Values: SRT, VTT, TTML, SBV, ASS
+        range: SubtitleFormatEnum
        required: true
        examples:
        - value: VTT
--- a/schemas/20251121/linkml/modules/classes/VideoTranscript.yaml
+++ b/schemas/20251121/linkml/modules/classes/VideoTranscript.yaml
@ -17,7 +17,7 @@ imports:
  - ../slots/specificity_annotation
  - ../slots/template_specificity
  # REMOVED 2026-01-14: ../slots/transcript_format - migrated to has_or_had_transcript_format with TranscriptFormat
-  - ../slots/has_or_had_transcript_format
+  - ../slots/has_or_had_format
  - ./SpecificityAnnotation
  - ./TemplateSpecificityScores
  - ../enums/TranscriptFormatEnum
@ -81,8 +81,8 @@ classes:
    - speaker_count
    - specificity_annotation
    - template_specificity
-    # REMOVED 2026-01-14: transcript_format - migrated to has_or_had_transcript_format with TranscriptFormat
-    - has_or_had_transcript_format
+    # REMOVED 2026-01-14: transcript_format - migrated to has_or_had_format with TranscriptFormatEnum
+    - has_or_had_format
    slot_usage:
      full_text:
        range: string
@ -104,7 +104,7 @@ classes:

            '
          description: Transcript with speaker labels
-      # REMOVED 2026-01-14: transcript_format - migrated to has_or_had_transcript_format with TranscriptFormat
+      # REMOVED 2026-01-14: transcript_format - migrated to has_or_had_format with TranscriptFormatEnum
      # transcript_format:
      #   range: TranscriptFormatEnum
      #   required: false
@ -112,8 +112,8 @@ classes:
      #   examples:
      #   - value: STRUCTURED
      #     description: Text with speaker labels and paragraph breaks
-      has_or_had_transcript_format:
-        # range: TranscriptFormat - defined in slot, no override needed
+      has_or_had_format:
+        range: TranscriptFormatEnum
        required: false
        description: The format of the transcript (plain text, structured, timestamped, etc.)
        examples:
--- a/schemas/20251121/linkml/modules/slots/has_or_had_format.yaml
+++ b/schemas/20251121/linkml/modules/slots/has_or_had_format.yaml
@ -2,7 +2,8 @@
 #
 # Created per slot_fixes.yaml migration for: typical_response_formats, transcript_format
 # Creation date: 2026-01-14
-# Rule compliance: 39 (RiC-O naming), 50 (ontology mapping)
+# Updated: 2026-01-16 - Broadened range to uriorcurie per Rule 54
+# Rule compliance: 39 (RiC-O naming), 50 (ontology mapping), 54 (broaden range)

 id: https://nde.nl/ontology/hc/slot/has_or_had_format
 name: has_or_had_format
@ -16,7 +17,6 @@ prefixes:

 default_prefix: hc

-
 imports:
  - linkml:types

@ -32,19 +32,21 @@ slots:
      - File formats for documents (PDF, DOCX, TXT)
      - Media formats (JPEG, MP3, MP4)
      - Transcript formats (VTT, SRT, plain text)
+      - Subtitle formats (WebVTT, SRT, etc.)
      
      **ONTOLOGY ALIGNMENT**:
-      - **Primary** (`slot_uri`): `hc:hasOrHadFormat` - Heritage Custodian ObjectProperty
-        for class-valued format ranges
-      - **Close**: `dct:format` - Dublin Core format (DatatypeProperty)
+      - **Primary** (`slot_uri`): `hc:hasOrHadFormat` - Heritage Custodian property
+      - **Close**: `dct:format` - Dublin Core format
      - **Close**: `schema:encodingFormat` - Schema.org encoding format
      
-      **Note**: slot_uri changed from dct:format to hc:hasOrHadFormat (2026-01-16)
-      to allow class-valued ranges (SubtitleFormatEnum, TranscriptFormat).
+      **Range**: `uriorcurie` (Rule 54)
+      Broadened range to accept URI/CURIE references to format specifications.
+      This allows linking to IANA media types, format registries, or internal
+      format classes while resolving OWL ambiguous type warnings.
      
-      **Range**: `Any` (2026-01-16) - Allows string values and class instances.
+      Classes can narrow to specific format enums/classes via slot_usage.
      
-    range: string
+    range: uriorcurie
    multivalued: true
    
    close_mappings:
@ -52,13 +54,21 @@ slots:
      - schema:encodingFormat
    
    examples:
-      - value: "application/json"
-        description: JSON MIME type for API responses
-      - value: "text/vtt"
-        description: WebVTT subtitle/transcript format
-      - value: "image/jpeg"
-        description: JPEG image format
+      - value: "iana:application/json"
+        description: JSON MIME type for API responses (CURIE)
+      - value: "iana:text/vtt"
+        description: WebVTT subtitle/transcript format (CURIE)
+      - value: "hc:TranscriptFormat/STRUCTURED"
+        description: Structured transcript with speaker labels (internal CURIE)
+      - value: "https://www.iana.org/assignments/media-types/image/jpeg"
+        description: JPEG image format (full URI)
    
    annotations:
      custodian_types: '["*"]'
      custodian_types_rationale: "Format specifications applicable to all custodian types."
+      range_broadening_date: "2026-01-16"
+      range_broadening_rationale: |
+        Changed from range:string to range:uriorcurie per Rule 54.
+        This allows linking to IANA media types, format registries, or format classes
+        while resolving OWL ambiguous type warnings. Replaces need for bespoke slots
+        like has_or_had_transcript_format or has_or_had_subtitle_format.
--- a/schemas/20251121/linkml/modules/slots/has_or_had_label.yaml
+++ b/schemas/20251121/linkml/modules/slots/has_or_had_label.yaml
@ -51,7 +51,7 @@ slots:
      
      **Range**: `Any` (2026-01-16) - Allows both string values and Label class instances.
      
-    range: string
+    range: uriorcurie
    required: false
    multivalued: true
    
--- a/schemas/20251121/linkml/modules/slots/has_or_had_rationale.yaml
+++ b/schemas/20251121/linkml/modules/slots/has_or_had_rationale.yaml
@ -40,7 +40,7 @@ slots:
      **Note**: slot_uri changed from skos:note to hc:hasOrHadRationale (2026-01-16)
      to allow class-valued ranges when classes use Rationale class.
      
-    range: string
+    range: uriorcurie
    
    close_mappings:
      - skos:note
--- a/schemas/20251121/linkml/modules/slots/has_or_had_status.yaml
+++ b/schemas/20251121/linkml/modules/slots/has_or_had_status.yaml
@ -23,7 +23,7 @@ default_prefix: hc
 slots:
  has_or_had_status:
    slot_uri: hc:hasOrHadStatus
-    range: string
+    range: uriorcurie
    description: |
      Current or past status of an entity.
      
--- a/schemas/20251121/linkml/modules/slots/has_or_had_subtitle_format.yaml
+++ b/schemas/20251121/linkml/modules/slots/has_or_had_subtitle_format.yaml
@ -1,64 +0,0 @@
-# has_or_had_subtitle_format - Subtitle format specification slot
-#
-# Created to fix gen-owl "Ambiguous type for: has_or_had_format" warning.
-# The base has_or_had_format slot has range: string, but VideoSubtitle needs
-# range: SubtitleFormatEnum. This specialized slot provides the enum-typed range.
-#
-# Creation date: 2026-01-16
-# Rule compliance: 39 (RiC-O naming), 50 (ontology mapping)
-
-id: https://nde.nl/ontology/hc/slot/has_or_had_subtitle_format
-name: has_or_had_subtitle_format
-title: Has or Had Subtitle Format
-
-prefixes:
-  linkml: https://w3id.org/linkml/
-  hc: https://nde.nl/ontology/hc/
-  schema: http://schema.org/
-
-default_prefix: hc
-
-imports:
-  - linkml:types
-  - ../enums/SubtitleFormatEnum
-
-slots:
-  has_or_had_subtitle_format:
-    slot_uri: hc:hasOrHadSubtitleFormat
-    description: |
-      The subtitle format for video subtitle tracks.
-      
-      **USAGE**:
-      Specifies the technical format of a subtitle file (SRT, VTT, TTML, etc.).
-      This slot is used exclusively by VideoSubtitle and related classes.
-      
-      **SUBTITLE FORMATS**:
-      | Format | Extension | Features | Use Case |
-      |--------|-----------|----------|----------|
-      | SRT | .srt | Simple, universal | Most video players |
-      | VTT | .vtt | W3C standard, styling | HTML5 video, web |
-      | TTML | .ttml/.dfxp | XML, rich styling | Broadcast, streaming |
-      | SBV | .sbv | YouTube native | YouTube uploads |
-      | ASS | .ass | Advanced styling | Anime, complex layouts |
-      
-      **ONTOLOGY ALIGNMENT**:
-      - **Primary** (`slot_uri`): `hc:hasOrHadSubtitleFormat` - Heritage Custodian property
-      - **Related**: `schema:encodingFormat` - General encoding format
-      
-    range: SubtitleFormatEnum
-    required: false
-    
-    close_mappings:
-      - schema:encodingFormat
-    
-    examples:
-      - value: VTT
-        description: WebVTT format (W3C standard for HTML5 video)
-      - value: SRT
-        description: SubRip format (most widely supported)
-      - value: TTML
-        description: Timed Text Markup Language (broadcast standard)
-    
-    annotations:
-      custodian_types: '["*"]'
-      custodian_types_rationale: "Subtitle formats applicable to all custodian types with video content."
--- a/schemas/20251121/linkml/modules/slots/has_or_had_transcript_format.yaml
+++ b/schemas/20251121/linkml/modules/slots/has_or_had_transcript_format.yaml
@ -1,64 +0,0 @@
-# has_or_had_transcript_format - Transcript format specification slot
-#
-# Created to fix gen-owl "Ambiguous type for: has_or_had_format" warning.
-# The base has_or_had_format slot has range: string, but VideoTranscript needs
-# range: TranscriptFormat. This specialized slot provides the class-typed range.
-#
-# Creation date: 2026-01-16
-# Rule compliance: 39 (RiC-O naming), 50 (ontology mapping)
-
-id: https://nde.nl/ontology/hc/slot/has_or_had_transcript_format
-name: has_or_had_transcript_format
-title: Has or Had Transcript Format
-
-prefixes:
-  linkml: https://w3id.org/linkml/
-  hc: https://nde.nl/ontology/hc/
-  schema: http://schema.org/
-
-default_prefix: hc
-
-imports:
-  - linkml:types
-  - ../classes/TranscriptFormat
-
-slots:
-  has_or_had_transcript_format:
-    slot_uri: hc:hasOrHadTranscriptFormat
-    description: |
-      The format of a transcript (plain text, structured, timestamped, etc.).
-      
-      **USAGE**:
-      Specifies the structural format of a transcript. This slot is used
-      exclusively by VideoTranscript and related classes.
-      
-      **TRANSCRIPT FORMATS**:
-      | Format | Description | Use Case |
-      |--------|-------------|----------|
-      | PLAIN_TEXT | Continuous text, no structure | Simple search indexing |
-      | PARAGRAPHED | Text broken into paragraphs | Human reading |
-      | STRUCTURED | Segments with speaker labels | Research, analysis |
-      | TIMESTAMPED | Segments with time markers | Navigation, subtitling |
-      
-      **ONTOLOGY ALIGNMENT**:
-      - **Primary** (`slot_uri`): `hc:hasOrHadTranscriptFormat` - Heritage Custodian property
-      - **Related**: `schema:encodingFormat` - General encoding format
-      
-    range: TranscriptFormat
-    required: false
-    inlined: true
-    
-    close_mappings:
-      - schema:encodingFormat
-    
-    examples:
-      - value: STRUCTURED
-        description: Text with speaker labels and paragraph breaks
-      - value: TIMESTAMPED
-        description: Segments with time codes for navigation
-      - value: PLAIN_TEXT
-        description: Continuous text without structure
-    
-    annotations:
-      custodian_types: '["*"]'
-      custodian_types_rationale: "Transcript formats applicable to all custodian types with video content."
--- a/schemas/20251121/linkml/modules/slots/has_or_had_type.yaml
+++ b/schemas/20251121/linkml/modules/slots/has_or_had_type.yaml
@ -5,8 +5,8 @@
 # for temporal relationships in heritage domain.
 #
 # Generation date: 2026-01-13
-# Updated: 2026-01-16 - Added any_of pattern to resolve OWL ambiguous type warning
-# Rule compliance: 38 (slot centralization + semantic URI), 39 (RiC-O naming), 42 (no prefix), 53 (generic slots)
+# Updated: 2026-01-16 - Broadened range to uriorcurie per Rule 54
+# Rule compliance: 38, 39, 42, 53, 54 (broaden range, not bespoke predicates)

 id: https://nde.nl/ontology/hc/slot/has_or_had_type
 name: has_or_had_type_slot
@ -24,7 +24,6 @@ default_prefix: hc

 imports:
  - linkml:types
-  - ../classes/TypeClass

 slots:
  has_or_had_type:
@ -37,28 +36,25 @@ slots:
      may be historical - an entity may have been reclassified over time.
      
      **Ontological Alignment**:
-      - **Primary** (`slot_uri`): `hc:hasOrHadType` - Heritage Custodian ObjectProperty
-        allowing class-valued ranges for type hierarchies
+      - **Primary** (`slot_uri`): `hc:hasOrHadType` - Heritage Custodian property
      - **Exact**: `crm:P2_has_type` - CIDOC-CRM predicate for typing entities
-        (range: E55_Type, an ObjectProperty)
      - **Close**: `dcterms:type` - Dublin Core type predicate
      - **Related**: `schema:additionalType` - Schema.org for web semantics
      
      **Usage**:
      This is a GENERIC slot intended for reuse across multiple classes.
-      Classes may specialize the range in slot_usage to reference the
-      appropriate Type class hierarchy (e.g., StorageType, ZoneType, etc.).
+      Classes may narrow the range in slot_usage to reference specific Type class
+      hierarchies (e.g., StorageType, ZoneType, etc.).
      
-      **Range** (any_of pattern):
-      Accepts both string literals and TypeClass instances. This resolves the
-      OWL "Ambiguous type" warning by explicitly declaring both valid ranges.
+      **Range**: `uriorcurie` (Rule 54)
+      Broadened range to accept URI/CURIE references to type concepts.
+      This resolves OWL "Ambiguous type" warnings while maintaining semantic richness.
+      Classes can still narrow to specific Type classes via slot_usage.
      
      **Cardinality**:
      Multivalued - entities may have multiple type classifications.
      
-    any_of:
-      - range: string
-      - range: TypeClass
+    range: uriorcurie
    required: false
    multivalued: true
    inlined_as_list: true
@ -87,27 +83,27 @@ slots:
        zone_type, warehouse_type, unit_type, treatment_type, storage_type,
        statement_type, sub_guide_type, wikidata_mapping_type
      migration_date: "2026-01-13"
-      any_of_fix_date: "2026-01-16"
-      any_of_fix_purpose: |
-        Added any_of pattern with TypeClass to resolve OWL "Ambiguous type" warning.
-        gen-owl was reporting ambiguity because slot had range:string but classes
-        overrode to class types via slot_usage.
+      range_broadening_date: "2026-01-16"
+      range_broadening_rationale: |
+        Changed from range:string to range:uriorcurie per Rule 54.
+        This resolves OWL "Ambiguous type" warning while maintaining
+        semantic flexibility. Classes can narrow to specific Type classes
+        via slot_usage without causing DatatypeProperty/ObjectProperty ambiguity.
      predicate_clarification: |
        slot_uri references a PREDICATE (hc:hasOrHadType), not a class.
-        The range is polymorphic via any_of, accepting both strings and TypeClass instances.
    
    comments:
      - "Generic type slot for reuse across multiple classes"
-      - "any_of pattern: accepts both string and TypeClass values"
+      - "Range: uriorcurie - accepts URI/CURIE references to type concepts"
      - "slot_uri=hc:hasOrHadType is a PREDICATE, not a class"
      - "RiC-O naming: hasOrHad indicates potentially historical relationship"
      - "Multivalued: entities may have multiple type classifications"
-      - "OWL fix: any_of pattern resolves Ambiguous type warning (2026-01-16)"
+      - "Rule 54: Broadened range instead of creating bespoke predicates"
    
    examples:
-      - value: StorageType:ARCHIVE_DEPOT
-        description: "Storage typed as archive depot (class instance)"
-      - value: ZoneType:CLIMATE_CONTROLLED
-        description: "Environmental zone type (class instance)"
-      - value: "historic building"
-        description: "Free-text type description (string literal)"
+      - value: "hc:StorageType/ARCHIVE_DEPOT"
+        description: "Storage typed as archive depot (CURIE reference)"
+      - value: "hc:ZoneType/CLIMATE_CONTROLLED"
+        description: "Environmental zone type (CURIE reference)"
+      - value: "https://example.org/vocab/historic-building"
+        description: "External vocabulary reference (full URI)"
--- a/schemas/20251121/linkml/modules/slots/has_or_had_url.yaml
+++ b/schemas/20251121/linkml/modules/slots/has_or_had_url.yaml
@ -58,7 +58,7 @@ slots:
      
      **Range**: `Any` (2026-01-16) - Allows uri/string values and URL class instances.
      
-    range: URL
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    required: false
    multivalued: true
    inlined: true
--- a/schemas/20251121/linkml/modules/slots/is_or_was_categorized_as.yaml
+++ b/schemas/20251121/linkml/modules/slots/is_or_was_categorized_as.yaml
@ -37,7 +37,7 @@ slots:
      
      **Range**: `Any` (2026-01-16) - Allows uriorcurie values and class instances.
      
-    range: uriorcurie
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    multivalued: true
    
    exact_mappings:
--- a/schemas/20251121/linkml/modules/slots/is_or_was_derived_from.yaml
+++ b/schemas/20251121/linkml/modules/slots/is_or_was_derived_from.yaml
@ -37,7 +37,7 @@ slots:
      to resolve OWL ambiguous type warning when classes override range
      to class types (e.g., CustodianObservation).
      
-    range: uriorcurie
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    
    exact_mappings:
      - prov:wasDerivedFrom
--- a/schemas/20251121/linkml/modules/slots/is_or_was_equivalent_to.yaml
+++ b/schemas/20251121/linkml/modules/slots/is_or_was_equivalent_to.yaml
@ -55,7 +55,7 @@ slots:
      **Cardinality**:
      Multivalued - an entity may have equivalences in multiple systems.
      
-    range: string
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    required: false
    multivalued: true
    inlined_as_list: true
--- a/schemas/20251121/linkml/modules/slots/is_or_was_generated_by.yaml
+++ b/schemas/20251121/linkml/modules/slots/is_or_was_generated_by.yaml
@ -37,7 +37,7 @@ slots:
      to resolve OWL ambiguous type warning when classes override range
      to class types (e.g., ReconstructionActivity).
      
-    range: uriorcurie
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    
    exact_mappings:
      - prov:wasGeneratedBy
--- a/schemas/20251121/linkml/modules/slots/is_or_was_instance_of.yaml
+++ b/schemas/20251121/linkml/modules/slots/is_or_was_instance_of.yaml
@ -60,7 +60,7 @@ slots:
      **Cardinality**:
      Multivalued - entities may have multiple classifications.
      
-    range: string
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    required: false
    multivalued: true
    inlined_as_list: true
--- a/schemas/20251121/linkml/modules/slots/is_or_was_related_to.yaml
+++ b/schemas/20251121/linkml/modules/slots/is_or_was_related_to.yaml
@ -62,7 +62,7 @@ slots:
      **Cardinality**:
      Multivalued - an entity may have multiple associations.
      
-    range: string
+    range: uriorcurie  # Broadened per Rule 55 (2026-01-16) to resolve OWL ambiguous type warning
    required: false
    multivalued: true
    inlined_as_list: true
--- a/schemas/20251121/linkml/modules/slots/slot_fixes.yaml
+++ b/schemas/20251121/linkml/modules/slots/slot_fixes.yaml
@ -5669,4 +5669,214 @@ fixes:
      using Description class with description_type: from_owner. Migrated for symmetry
      with to_owner_text which was migrated earlier in same session. Owner class not
      used (existing from_owner slot provides structured reference). Original slot
-      archived to archive/from_owner_text_archived_20260115.yaml.'
+      archived to archive/from_owner_text_archived_20260115.yaml.'
+- original_slot_id: https://nde.nl/ontology/hc/slot/about_text
+  revision:
+    - label: has_or_had_description
+      type: slot
+    - label: Description
+      type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/address_type
+  revision:
+  - label: has_or_had_address 
+    type: slot
+  - label: Address
+    type: class
+  - label: has_or_had_type
+    type: slot
+  - label: AddressType
+    type: class
+  - label: includes_or_included
+    type: slot
+  - label: AddressTypes
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/algorithm_name
+  revision:
+  - label: has_or_had_label
+    type: slot
+  - label: Label
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/algorithm_version
+  revision:
+  - label: has_or_had_version
+    type: slot
+  - label: Version
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/amount
+  revision:
+  - label: has_or_had_quantity
+    type: slot
+  - label: Quantity
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/applies_or_applied_to_call
+  revision:
+  - label: applies_or_applied_to
+    type: slot
+  - label: CallForApplication
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/approximation_level
+  revision:
+  - label: has_or_had_level
+    type: slot
+  - label: ApproximationLevel
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/archival_reference
+  revision:
+  - label: has_or_had_provenance
+    type: slot
+  - label: Provenance
+    type: class
+  - label: has_or_had_reference
+    type: slot
+  - label: Reference
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/area_value
+  revision:
+  - label: has_or_had_area
+    type: slot
+  - label: Area
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/arrangement_level
+  revision:
+  - label: has_or_had_level
+    type: slot
+  - label: ArrangementLevel
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/asserter_contact
+  revision:
+  - label: has_or_had_contact_person
+    type: slot
+  - label: ContactPerson
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/asserter_type
+  revision:
+  - label: has_or_had_type
+    type: slot
+  - label: AsserterType
+    type: class
+  - label: includes_or_included
+    type: slot
+  - label: AsserterTypes
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/asserter_version
+  revision:
+  - label: has_or_had_version
+    type: slot
+  - label: Version
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/assessment_date
+  revision:
+   - label: is_or_was_assessed
+     type: slot
+   - label: Assessment
+     type: class
+   - label: temporal_extent
+     type: slot
+   - label: TimeSpan
+     type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/audience_size
+  revision:
+  - label: serves_or_served 
+    type: slot
+  - label: UserCommunity
+    type: class
+  - label: has_or_had_quantity
+    type: slot
+  - label: AudienceSize
+    type: class
+  - label: has_or_had_unit
+    type: slot
+  - label: MeasurementUnit
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/audience_type
+  revision:
+    - label: serves_or_served 
+      type: slot
+    - label: UserCommunity
+      type: class
+    - label: has_or_had_type
+      type: slot
+    - label: UserCommunityType
+      type: class
+    - label: includes_or_included
+      type: slot
+    - label: UserCommunityTypes
+      type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/audio_quality_score
+  revision:
+  - label: has_or_had_audio 
+    type: slot
+  - label: Audio
+    type: class
+  - label: has_or_had_score
+    type: slot
+  - label: QualityScore
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/audit_date
+  revision:
+  - label: is_or_was_audited
+    type: slot
+  - label: AuditEvent
+    type: class
+  - label: temporal_extent
+    type: slot
+  - label: TimeSpan
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/audit_opinion
+  revision:
+  - label: is_or_was_audited
+    type: slot
+  - label: AuditEvent
+    type: class
+  - label: concludes_or_concluded
+    type: slot
+  - label: AuditOpinion
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/audit_status
+  revision:
+  - label: is_or_was_audited
+    type: slot
+  - label: AuditEvent
+    type: class
+  - label: has_or_had_status
+    type: slot
+  - label: AuditStatus
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/auditor_name
+  revision:
+  - label: is_or_was_audited
+    type: slot
+  - label: AuditEvent
+    type: class
+  - label: is_or_was_conducted_by
+    type: slot
+  - label: Auditor
+    type: class
+  - label: has_or_had_name
+    type: slot
+  - label: Name
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/author_affiliation
+  revision:
+  - label: is_or_was_affiliated_with
+    type: slot
+  - label: Affiliation
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/author_identifier
+  revision:
+  - label: has_or_had_identifier
+    type: slot
+  - label: Identifier
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/author_name
+  revision:
+  - label: has_or_had_name
+    type: slot
+  - label: Name
+    type: class
+- original_slot_id: https://nde.nl/ontology/hc/slot/author_role
+  revision:
+  - label: has_or_had_role
+    type: slot
+  - label: AuthorRole
+    type: class
--- a/schemas/20251121/linkml/scripts/gen-heritage-owl.sh
+++ b/schemas/20251121/linkml/scripts/gen-heritage-owl.sh
@ -0,0 +1,40 @@
+#!/bin/bash
+# gen-heritage-owl.sh - Generate OWL ontology from Heritage Custodian LinkML schema
+#
+# Usage:
+#   ./scripts/gen-heritage-owl.sh [output-file] [additional-args...]
+#
+# Examples:
+#   ./scripts/gen-heritage-owl.sh                           # Output to stdout
+#   ./scripts/gen-heritage-owl.sh heritage_custodian.owl    # Output to file
+#   ./scripts/gen-heritage-owl.sh -f ttl                    # Turtle format
+#
+# Why --type-objects is required:
+#   The Heritage Custodian schema uses generic slots (e.g., has_or_had_type,
+#   has_or_had_format) with `range: uriorcurie` that are narrowed by classes
+#   via slot_usage. While the range broadening to uriorcurie resolves most
+#   OWL ambiguity warnings, using --type-objects ensures consistent
+#   ObjectProperty treatment for all polymorphic slots.
+#
+# See also:
+#   - Rule 55: Broaden Generic Predicate Ranges (.opencode/rules/broaden-generic-predicate-ranges-rule.md)
+#   - Rule 53: Full Slot Migration (slot_fixes.yaml)
+#
+# Created: 2026-01-16
+# Updated: 2026-01-16
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+SCHEMA_DIR="$(dirname "$SCRIPT_DIR")"
+SCHEMA_FILE="${SCHEMA_DIR}/01_custodian_name_modular.yaml"
+
+if [[ ! -f "$SCHEMA_FILE" ]]; then
+    echo "Error: Schema file not found: $SCHEMA_FILE" >&2
+    exit 1
+fi
+
+# Run gen-owl with --type-objects flag
+# This treats types as objects (ObjectProperty) rather than literals (DatatypeProperty)
+# which matches our polymorphic slot design pattern
+exec gen-owl --type-objects "$SCHEMA_FILE" "$@"