import os

filepath = 'schemas/20251121/linkml/modules/classes/ApproximationStatus.yaml'

with open(filepath, 'r') as f:
    content = f.read()

# The error is that  appears inside a description string that is formatted as a YAML block.
# This should NOT cause  error unless it's being parsed as an example value?
# But  showed it in .
# Wait, the grep output showed it on line 28 inside a quoted string.

# However, earlier grep showed:
# schemas/20251121/linkml/modules/classes/CustodianTimelineEvent.yaml:    event_date: "2005-04-30"

# This looks like it IS used as a key in  inside an example block.

# Let's check .