glam/schemas/20251121/linkml/modules/classes/WebPortal.yaml

id: https://nde.nl/ontology/hc/class/WebPortal
name: WebPortal
imports:
  - linkml:types
  - ./WebPortalType
  - ./TimeSpan
  - ./CustodianObservation
  - ./ReconstructionActivity
  - ./DataLicensePolicy
  - ./Project
  - ./DigitalPlatform
  - ./AuxiliaryDigitalPlatform
  - ./EncompassingBody
  - ./DataServiceEndpoint
  - ./OAIPMHEndpoint
  - ./SearchAPI
  - ./METSAPI
  - ./DataServiceEndpointTypes
  - ../slots/has_or_had_api_endpoint
  - ../slots/geographic_scope
  - ../slots/metadata_standard
  - ../slots/sparql_endpoint
  - ../slots/oai_pmh_endpoint
  - ../slots/external_identifier
  - ../slots/has_or_had_portal_data_source
  - ../slots/operated_by
  - ../slots/has_or_had_exposed_collection
  - ../slots/data_license_policy
  - ../slots/serves_finding_aid
  - ./ReconstructedEntity
  - ../slots/has_or_had_data_service_endpoint
  - ../slots/is_or_was_aggregated_by
  # aggregates_from REMOVED - migrated to aggregates_or_aggregated_from (Rule 53)
  # associated_encompassing_bodies REMOVED - migrated to is_or_was_associated_with (Rule 53)
  - ../slots/is_or_was_associated_with
  - ../slots/created_by_project
  - ../slots/implements_auxiliary_platform
  - ../slots/implements_digital_platform
  - ../slots/launch_date
  - ../slots/participating_institution
  - ../slots/portal_description
  - ../slots/portal_id
  - ../slots/portal_language
  - ../slots/portal_name
  - ../slots/portal_status
  - ../slots/portal_type
  - ../slots/portal_url
  - ../slots/record_count
  - ../slots/specificity_annotation
  - ../slots/supersedes_or_superseded  # was: successor_portal - migrated per Rule 53/56 (2026-01-17)
  - ../slots/has_or_had_score  # was: template_specificity - migrated per Rule 53 (2026-01-17)
  - ../slots/temporal_extent
  - ../slots/has_or_had_scope  # was: thematic_scope - migrated per Rule 53
  - ../slots/is_or_was_derived_from  # was: was_derived_from - migrated per Rule 53
  - ../slots/is_or_was_generated_by  # was: was_generated_by - migrated per Rule 53
  - ./CollectionManagementSystem
  - ./CustodianCollection
  - ./SpecificityAnnotation
  - ./TemplateSpecificityScore  # was: TemplateSpecificityScores - migrated per Rule 53 (2026-01-17)

  - ./TemplateSpecificityType

  - ./TemplateSpecificityTypes
  - ./Scope  # for has_or_had_scope slot (Rule 53 migration)
  - ../slots/aggregates_or_aggregated_from
  # has_or_had_associated_encompassing_body REMOVED - replaced by generic is_or_was_associated_with (Rule 53)
prefixes:
  linkml: https://w3id.org/linkml/
  hc: https://nde.nl/ontology/hc/
  schema: http://schema.org/
  dcterms: http://purl.org/dc/terms/
  edm: http://www.europeana.eu/schemas/edm/
  prov: http://www.w3.org/ns/prov#
  foaf: http://xmlns.com/foaf/0.1/
  ore: http://www.openarchives.org/ore/terms/
  skos: http://www.w3.org/2004/02/skos/core#
  odrl: http://www.w3.org/ns/odrl/2/
  org: http://www.w3.org/ns/org#
default_prefix: hc
classes:
  WebPortal:
    is_a: ReconstructedEntity
    class_uri: edm:Aggregation
    description: "A web portal that aggregates or provides discovery access to heritage\nmetadata from multiple custodian\
      \ institutions.\n\n**DEFINITION**:\n\nWebPortal represents AGGREGATION/DISCOVERY portals - platforms that collect\n\
      and expose metadata from multiple heritage institutions. Distinguished from:\n- **DigitalPlatform**: A single custodian's\
      \ website/online presence\n- **CollectionManagementSystem**: Backend software managing collection data\n\n**KEY CHARACTERISTICS**:\n\
      \n1. **Multi-Institution Aggregation**: Portals aggregate metadata from many institutions\n2. **Discovery Focus**: Primary\
      \ purpose is search/discovery across collections\n3. **Standardized Metadata**: Use common standards (EDM, Dublin Core,\
      \ EAD, LIDO)\n4. **Technical Infrastructure**: Provide APIs, OAI-PMH endpoints, SPARQL\n5. **Operated by Networks**:\
      \ Typically run by EncompassingBody (Network, Consortium)\n\n**RELATIONSHIP ARCHITECTURE**:\n\n```\nEncompassingBody\
      \ (operator)\n     │\n     └── operates → WebPortal\n                      │\n                      ├── portal_data_sources\
      \ ← CollectionManagementSystem[]\n                      │                          (CMS feeds data to portal)\n    \
      \                  │\n                      ├── exposes_collections → CustodianCollection[]\n                      │\
      \                          (collections discoverable via portal)\n                      │\n                      └──\
      \ aggregates_from → WebPortal[]\n                                             (portal-to-portal aggregation chains)\n\
      ```\n\n**AGGREGATION CHAINS**:\n\nSome portals aggregate from other portals, forming chains:\n```\nCMS → Regional Archive\
      \ Portal → National Archive Portal → Archives Portal Europe\nCMS → Museum → Aggregator → Europeana\n```\n\nUse `aggregates_from`\
      \ and `aggregated_by` to model these chains.\n\n**PORTAL TYPES** (from WebPortalType class hierarchy):\n\n- **NATIONAL_AGGREGATOR**:\
      \ NDE Dataset Register, Deutsche Digitale Bibliothek\n- **REGIONAL_AGGREGATOR**: LEO-BW, Bavarikon\n- **ARCHIVAL_PORTAL**:\
      \ Archieven.nl, Archives Portal Europe\n- **LIBRARY_UNION_CATALOG**: WorldCat, GBV\n- **MUSEUM_COLLECTION_PORTAL**:\
      \ Collectie Nederland, Europeana Collections\n- **CROSS_DOMAIN_AGGREGATOR**: Europeana, DPLA\n- **COLONIAL_HERITAGE_PORTAL**:\
      \ Colonial Collections (NL)\n- **GENEALOGICAL_PORTAL**: OpenArchieven.nl, FamilySearch\n- **LINKED_DATA_HUB**: NDE Termennetwerk,\
      \ Wikidata\n- **OAI_PMH_HARVESTER**: BASE, OpenAIRE\n\n**EXAMPLES OF DUTCH PORTALS**:\n\n1. **NDE Dataset Register**\
      \ (datacatalogus.netwerkdigitaalerfgoed.nl)\n   - Type: NATIONAL_AGGREGATOR\n   - Operator: NDE (NetworkOrganisation)\n\
      \   - Scope: All Dutch heritage datasets\n   \n2. **Archieven.nl** (archieven.nl)\n   - Type: ARCHIVAL_PORTAL\n   -\
      \ Operator: KVAN network\n   - Data sources: MAIS-Flexis deployments at regional archives\n   - Aggregated by: Archives\
      \ Portal Europe\n   \n3. **OpenArchieven.nl** (openarchieven.nl)\n   - Type: GENEALOGICAL_PORTAL\n   - Focus: Scanned\
      \ civil registration, parish records\n   - Open access genealogical sources\n   \n4. **Collectie Nederland** (collectienederland.nl)\n\
      \   - Type: MUSEUM_COLLECTION_PORTAL\n   - Operator: Rijksdienst voor het Cultureel Erfgoed\n   - Aggregates museum\
      \ objects from Dutch museums\n   \n5. **Colonial Collections** (datacatalogus.../group/colonial-collections)\n   - Type:\
      \ COLONIAL_HERITAGE_PORTAL\n   - Focus: Colonial history provenance research\n   - Part of NDE Dataset Register infrastructure\n\
      \n**EXAMPLES OF GERMAN PORTALS**:\n\n1. **Archivportal-D** (archivportal-d.de)\n   - Type: ARCHIVAL_PORTAL\n   - Operator:\
      \ Landesarchiv Baden-Württemberg (coordination)\n   - National archive finding aid aggregator\n   \n2. **Deutsche Digitale\
      \ Bibliothek** (deutsche-digitale-bibliothek.de)\n   - Type: CROSS_DOMAIN_AGGREGATOR\n   - German national aggregator\
      \ for Europeana\n   - Cross-domain (archives, libraries, museums)\n   \n3. **LEO-BW** (leo-bw.de)\n   - Type: REGIONAL_AGGREGATOR\n\
      \   - Baden-Württemberg regional portal\n   \n4. **Bavarikon** (bavarikon.de)\n   - Type: REGIONAL_AGGREGATOR\n   -\
      \ Bavaria regional cultural heritage portal\n\n**EXAMPLES OF EUROPEAN/INTERNATIONAL PORTALS**:\n\n1. **Europeana** (europeana.eu)\n\
      \   - Type: CROSS_DOMAIN_AGGREGATOR\n   - Operator: Europeana Foundation (NetworkOrganisation)\n   - 50M+ objects from\
      \ European cultural heritage\n   - Aggregates from national aggregators (DDB, Gallica, etc.)\n   \n2. **Archives Portal\
      \ Europe** (archivesportaleurope.net)\n   - Type: ARCHIVAL_PORTAL\n   - Operator: APEF Foundation\n   - European archival\
      \ finding aids\n   - Aggregates from national archive portals\n   \n3. **Monasterium.net** (monasterium.net)\n   - Type:\
      \ MONASTIC_HERITAGE_PORTAL\n   - Operator: ICARUS (Consortium)\n   - Medieval charters and monastic documents\n   \n\
      4. **WorldCat** (worldcat.org)\n   - Type: LIBRARY_UNION_CATALOG\n   - Operator: OCLC (Cooperative)\n   - 500M+ bibliographic\
      \ records\n\n**ONTOLOGY ALIGNMENT**:\n\n- **EDM** (`edm:Aggregation`): Primary mapping - portal aggregates CHOs\n- **ORE**\
      \ (`ore:Aggregation`): Object Reuse and Exchange aggregation\n- **Schema.org** (`schema:WebSite` + `schema:DataCatalog`):\
      \ Web presence + data catalog\n- **DCMI Type** (`dcmitype:Collection`): Collection of metadata records\n\n**LIFECYCLE\
      \ AND MIGRATION**:\n\nPortals evolve over time:\n- New portals launch\n- Portals merge (use `supersedes_or_superseded`)\n- Portals\
      \ become legacy but remain accessible\n- Portal scope expands (regional → national)\n\nTrack status with `portal_status`:\
      \ ACTIVE, LEGACY, DEPRECATED, MERGED\n"
    exact_mappings:
    - edm:Aggregation
    - ore:Aggregation
    close_mappings:
    - schema:WebSite
    - schema:DataCatalog
    - dcmitype:Collection
    slots:
    - is_or_was_aggregated_by
    # aggregates_from REMOVED - use aggregates_or_aggregated_from (Rule 53)
    - aggregates_or_aggregated_from
    - has_or_had_api_endpoint
    # associated_encompassing_bodies REMOVED - use is_or_was_associated_with (Rule 53)
    - is_or_was_associated_with
    - created_by_project
    - data_license_policy
    - has_or_had_data_service_endpoint
    - has_or_had_exposed_collection
    - geographic_scope
    - external_identifier
    - implements_auxiliary_platform
    - implements_digital_platform
    - launch_date
    - metadata_standard
    - oai_pmh_endpoint
    - operated_by
    - participating_institution
    - has_or_had_portal_data_source
    - portal_description
    - portal_id
    - portal_language
    - portal_name
    - portal_status
    - portal_type
    - portal_url
    - record_count
    - serves_finding_aid
    - sparql_endpoint
    - specificity_annotation
    - supersedes_or_superseded  # was: successor_portal - migrated per Rule 53/56 (2026-01-17)
    - has_or_had_score  # was: template_specificity - migrated per Rule 53 (2026-01-17)
    - temporal_extent
    - has_or_had_scope  # was: thematic_scope - migrated per Rule 53
    - is_or_was_derived_from  # was: was_derived_from - migrated per Rule 53
    - is_or_was_generated_by  # was: was_generated_by - migrated per Rule 53
    slot_usage:
      portal_id:
        identifier: true
        required: true
        range: uriorcurie
        pattern: ^https://nde\.nl/ontology/hc/portal/[a-z-]+/[a-z0-9-]+$
        examples:
        - value: https://nde.nl/ontology/hc/portal/nl/archieven-nl
          description: Dutch Archieven.nl portal
        - value: https://nde.nl/ontology/hc/portal/eu/europeana
          description: Europeana pan-European portal
      portal_name:
        required: true
        range: string
        examples:
        - value: Archieven.nl
        - value: Deutsche Digitale Bibliothek
        - value: Europeana
      portal_type:
        required: true
        range: WebPortalType
        examples:
        - value: ARCHIVAL_PORTAL
        - value: CROSS_DOMAIN_AGGREGATOR
        - value: REGIONAL_AGGREGATOR
      portal_url:
        required: true
        range: uri
        examples:
        - value: https://archieven.nl
        - value: https://www.europeana.eu
        - value: https://www.deutsche-digitale-bibliothek.de
      portal_description:
        range: string
        examples:
        - value: Archieven.nl is the Dutch national portal for archival finding aids, providing unified search across 80+
            Dutch archives.
      geographic_scope:
        range: string
        multivalued: true
        inlined_as_list: true
        examples:
        - value: NL
          description: Netherlands national coverage
        - value: DE-BW
          description: Baden-Württemberg regional coverage
        - value: EU
          description: European Union coverage
      has_or_had_scope:  # was: thematic_scope - migrated per Rule 53
        range: Scope
        inlined: true
        multivalued: true
        inlined_as_list: true
        description: |
          Thematic or domain focus areas of the portal.
          MIGRATED 2026-01-15: Uses Scope class to capture thematic scope information.          
        examples:
        - value: |
            has_or_had_scope:
              scope_description: "Archival finding aids"
              subject_coverage:
                - "Government records"
                - "Genealogical sources"            
          description: Thematic scope for archival portal
      has_or_had_portal_data_source:
        range: uriorcurie
        multivalued: true
        inlined_as_list: true
        examples:
        - value: https://nde.nl/ontology/hc/cms/gelders-archief-mais
          description: MAIS deployment feeding Archieven.nl
      has_or_had_exposed_collection:
        range: uriorcurie
        multivalued: true
        inlined_as_list: true
        examples:
        - value: https://nde.nl/ontology/hc/collection/na/voc-archives
          description: VOC Archives exposed via Colonial Collections portal
      operated_by:
        required: true
        range: uriorcurie
        examples:
        - value: https://nde.nl/ontology/hc/encompassing-body/network/nde
          description: NDE operates the Dataset Register
        - value: https://nde.nl/ontology/hc/encompassing-body/network/europeana-foundation
          description: Europeana Foundation operates Europeana
      aggregates_or_aggregated_from:
        range: uriorcurie
        multivalued: true
        inlined_as_list: true
        examples:
        - value: https://nde.nl/ontology/hc/portal/de/ddb
          description: Europeana aggregates from DDB
      is_or_was_aggregated_by:
        range: uriorcurie
        multivalued: true
        inlined_as_list: true
        examples:
        - value: https://nde.nl/ontology/hc/portal/eu/europeana
          description: This portal's data is aggregated by Europeana
      metadata_standard:
        range: string
        multivalued: true
        inlined_as_list: true
        examples:
        - value: EDM (Europeana Data Model)
        - value: EAD (Encoded Archival Description)
        - value: Dublin Core
        - value: LIDO
      has_or_had_api_endpoint:
        range: uri
        examples:
        - value: https://api.europeana.eu/record/v2/
      sparql_endpoint:
        range: uri
        examples:
        - value: https://sparql.europeana.eu/
      oai_pmh_endpoint:
        range: uri
        examples:
        - value: https://oai.europeana.eu/oai
      portal_language:
        range: string
        multivalued: true
        inlined_as_list: true
        examples:
        - value: nl
        - value: en
        - value: de
      launch_date:
        range: date
        examples:
        - value: '2008-11-20'
          description: Europeana launch date
      portal_status:
        range: string
        examples:
        - value: ACTIVE
        - value: LEGACY
      supersedes_or_superseded:  # was: successor_portal - migrated per Rule 53/56 (2026-01-17)
        range: uriorcurie
        description: |
          Portal that replaced this one (if deprecated or merged), or that this portal replaced.
          MIGRATED from successor_portal per Rule 53/56 (2026-01-17).          
        examples:
        - value: https://nde.nl/ontology/hc/portal/nl/new-archieven-portal
          description: Hypothetical successor portal
      record_count:
        range: integer
        examples:
        - value: 50000000
          description: 'Europeana: 50M+ objects'
        - value: 15000000
          description: 'DDB: 15M+ objects'
      participating_institution:
        range: integer
        examples:
        - value: 80
          description: 'Archieven.nl: 80+ archives'
        - value: 4000
          description: 'Europeana: 4000+ institutions'
      external_identifier:
        range: uriorcurie
        multivalued: true
        inlined_as_list: true
        examples:
        - value: http://www.wikidata.org/entity/Q209441
          description: Europeana Wikidata ID
      temporal_extent:
        range: TimeSpan
      is_or_was_derived_from:  # was: was_derived_from - migrated per Rule 53
        range: CustodianObservation
        multivalued: true
      is_or_was_generated_by:  # was: was_generated_by - migrated per Rule 53
        range: ReconstructionActivity
      data_license_policy:
        range: DataLicensePolicy
        examples:
        - value: https://nde.nl/ontology/hc/policy/europeana
          description: Europeana's CC0 metadata policy
        - value: https://nde.nl/ontology/hc/policy/archieven-nl
          description: Archieven.nl data policy
      created_by_project:
        range: Project
        examples:
        - value: https://nde.nl/ontology/hc/project/nde/nde-portal-development-2023
          description: NDE Portal Development project that created this portal
      is_or_was_associated_with:
        description: >-
          MIGRATED from associated_encompassing_bodies and has_or_had_associated_encompassing_body (Rule 53).
          EncompassingBody organizations associated with this portal beyond the operator.
          Range narrowed to uriorcurie for EncompassingBody references.          
        range: uriorcurie
        multivalued: true
        inlined_as_list: true
        examples:
        - value: https://nde.nl/ontology/hc/encompassing-body/consortium/dans
          description: DANS consortium as advisory partner
        - value: https://nde.nl/ontology/hc/encompassing-body/network/europeana-aggregators
          description: Europeana Aggregators Network
      implements_digital_platform:
        range: DigitalPlatform
        multivalued: true
        inlined_as_list: true
        examples:
        - value: https://nde.nl/ontology/hc/platform/rijksmuseum-website
          description: Rijksmuseum digital platform aggregated by Europeana
      implements_auxiliary_platform:
        range: AuxiliaryDigitalPlatform
        multivalued: true
        inlined_as_list: true
        examples:
        - value: https://nde.nl/ontology/hc/aux-platform/nde-colonial-collections
          description: Colonial Collections thematic sub-portal
        - value: https://nde.nl/ontology/hc/aux-platform/europeana-api-v3
          description: Europeana REST API v3
      serves_finding_aid:
        range: uriorcurie
        multivalued: true
        inlined_as_list: true
        required: false
        examples:
        - value: https://nde.nl/ontology/hc/finding-aid/gelders-archief/ead-main
          description: Gelders Archief EAD inventory
        - value: https://nde.nl/ontology/hc/finding-aid/na/collection-guide
          description: National Archives collection guide
      has_or_had_data_service_endpoint:
        range: DataServiceEndpoint
        multivalued: true
        inlined_as_list: true
        required: false
        examples:
        - value:
          - endpoint_id: https://nde.nl/ontology/hc/endpoint/europeana-oai
            endpoint_name: Europeana OAI-PMH
            endpoint_url: https://oai.europeana.eu/oai
            protocol: OAI_PMH
            protocol_version: '2.0'
            status: ACTIVE
          description: Europeana portal data service endpoints
    comments:
    - WebPortal is DISTINCT from DigitalPlatform (single custodian website)
    - WebPortal AGGREGATES metadata from multiple institutions
    - 'Portals form aggregation chains: regional → national → European'
    - Typically operated by EncompassingBody (Network, Consortium)
    - Track lifecycle with portal_status and supersedes_or_superseded
    - 'NEW: data_license_policy links to portal''s licensing stance (CC0, CC-BY, etc.)'
    - 'NEW: created_by_project links to Project that built the portal'
    - 'NEW: is_or_was_associated_with for organizational relationships beyond operator (migrated from associated_encompassing_bodies)'
    - 'NEW: implements_digital_platform links to aggregated DigitalPlatform instances'
    - 'NEW: implements_auxiliary_platform links to subordinate AuxiliaryDigitalPlatform instances'
    - 'FUNDING: For funding relationships, link FundingOrganisation → Project → WebPortal (not direct)'
    see_also:
    - https://pro.europeana.eu/page/edm-documentation
    - https://www.openarchives.org/ore/
    - https://www.openarchives.org/pmh/
    examples:
    - value:
        portal_id: https://nde.nl/ontology/hc/portal/nl/archieven-nl
        portal_name: Archieven.nl
        portal_type: ARCHIVAL_PORTAL
        portal_url: https://archieven.nl
        portal_description: 'Archieven.nl is the Dutch national portal for archival finding aids,

          providing unified search across 80+ Dutch archives. Users can search

          EAD-encoded finding aids and access scanned documents.

          '
        geographic_scope:
        - NL
        has_or_had_scope:  # was: thematic_scope - migrated per Rule 53
        - scope_description: Archival finding aids
          subject_coverage:
          - Government records
          - Genealogical sources
        operated_by: https://nde.nl/ontology/hc/encompassing-body/network/kvan
        is_or_was_aggregated_by:
        - https://nde.nl/ontology/hc/portal/eu/archives-portal-europe
        metadata_standard:
        - EAD (Encoded Archival Description)
        - EAC-CPF
        oai_pmh_endpoint: https://oai.archieven.nl/
        portal_language:
        - nl
        - en
        portal_status: ACTIVE
        participating_institutions: 80
      description: Archieven.nl - Dutch national archival portal
    - value:
        portal_id: https://nde.nl/ontology/hc/portal/eu/europeana
        portal_name: Europeana
        portal_type: CROSS_DOMAIN_AGGREGATOR
        portal_url: https://www.europeana.eu
        portal_description: 'Europeana provides access to over 50 million digitised items from

          European museums, galleries, libraries, and archives. It is the

          European Union''s digital platform for cultural heritage.

          '
        geographic_scope:
        - EU
        - EEA
        has_or_had_scope:  # was: thematic_scope - migrated per Rule 53
        - scope_description: Art and cultural heritage
          subject_coverage:
          - Libraries
          - Archives
          - Museums
        operated_by: https://nde.nl/ontology/hc/encompassing-body/network/europeana-foundation
        aggregates_or_aggregated_from:
        - https://nde.nl/ontology/hc/portal/de/ddb
        - https://nde.nl/ontology/hc/portal/fr/gallica
        - https://nde.nl/ontology/hc/portal/nl/collectie-nederland
        metadata_standard:
        - EDM (Europeana Data Model)
        - Dublin Core
        api_endpoint: https://api.europeana.eu/record/v2/
        sparql_endpoint: https://sparql.europeana.eu/
        oai_pmh_endpoint: https://oai.europeana.eu/oai
        portal_language:
        - en
        - de
        - fr
        - nl
        launch_date: '2008-11-20'
        portal_status: ACTIVE
        record_count: 50000000
        participating_institutions: 4000
        external_identifier:
        - http://www.wikidata.org/entity/Q209441
        data_license_policy:
        - policy_id: https://nde.nl/ontology/hc/policy/europeana-data-exchange
          policy_name: Europeana Data Exchange Agreement
          data_licenses:
          - license_id: https://creativecommons.org/publicdomain/zero/1.0/
            license_name: CC0 1.0 Universal (Public Domain)
            license_scope: Metadata provided to Europeana
          temporal_extent:
            begin_of_the_begin: '2011-09-01'
            end_of_the_end: null
        created_by_project:
          project_id: https://nde.nl/ontology/hc/project/europeana-dsi
          project_name: Europeana DSI (Digital Service Infrastructure)
          project_description: "EU-funded project under CEF Telecom to develop and maintain the \nEuropeana digital platform\
            \ as core European cultural heritage infrastructure.\n"
          funding_sources:
          - https://nde.nl/ontology/hc/funding-org/eu/cef-telecom
          project_period:
            begin_of_the_begin: '2015-01-01'
            end_of_the_end: '2025-12-31'
        is_or_was_associated_with:
        - https://nde.nl/ontology/hc/encompassing-body/government/european-commission
        - https://nde.nl/ontology/hc/encompassing-body/network/europeana-foundation
        - https://nde.nl/ontology/hc/encompassing-body/consortium/europeana-network-association
        implements_digital_platform:
        - platform_id: https://nde.nl/ontology/hc/platform/europeana-collections
          platform_name: Europeana Collections
          platform_url: https://www.europeana.eu/collections
          temporal_extent:
            begin_of_the_begin: '2008-11-20'
        - platform_id: https://nde.nl/ontology/hc/platform/europeana-pro
          platform_name: Europeana Pro
          platform_url: https://pro.europeana.eu
          temporal_extent:
            begin_of_the_begin: '2014-01-01'
        implements_auxiliary_platform:
        - auxiliary_id: https://nde.nl/ontology/hc/auxiliary/europeana-iiif
          auxiliary_name: Europeana IIIF APIs
          auxiliary_url: https://iiif.europeana.eu
          auxiliary_type: IIIF_SERVER
          temporal_extent:
            begin_of_the_begin: '2018-01-01'
        - auxiliary_id: https://nde.nl/ontology/hc/auxiliary/europeana-entity-api
          auxiliary_name: Europeana Entity API
          auxiliary_url: https://api.europeana.eu/entity
          auxiliary_type: REST_API
          temporal_extent:
            begin_of_the_begin: '2017-01-01'
      description: Europeana - pan-European cultural heritage portal (comprehensive example with all relationship slots)
    - value:
        portal_id: https://nde.nl/ontology/hc/portal/de/archivportal-d
        portal_name: Archivportal-D
        portal_type: ARCHIVAL_PORTAL
        portal_url: https://www.archivportal-d.de
        portal_description: 'Archivportal-D is the German national portal for archival finding aids,

          aggregating EAD descriptions from German archives and providing unified

          search and access.

          '
        geographic_scope:
        - DE
        has_or_had_scope:  # was: thematic_scope - migrated per Rule 53
        - scope_description: Archival finding aids
        operated_by: https://nde.nl/ontology/hc/encompassing-body/network/archivportal-d-koordination
        is_or_was_aggregated_by:
        - https://nde.nl/ontology/hc/portal/eu/archives-portal-europe
        - https://nde.nl/ontology/hc/portal/de/ddb
        metadata_standard:
        - EAD
        - EAC-CPF
        portal_language:
        - de
        - en
        portal_status: ACTIVE
      description: Archivportal-D - German national archival portal