Enrich politicians with citizenship and gender data

This is an idea to explore enriching politician data with citizenship and gender information.

Context

Currently we extract birth dates, death dates, birthplaces, and political positions from Wikipedia sources. We should consider whether it would be valuable to also extract:

• Citizenship information
• Gender identity

Considerations

• Wikipedia articles often contain citizenship and gender information
• These properties exist in Wikidata (P27 for citizenship, P21 for gender)
• Would provide more complete politician profiles

Current enrichment capabilities

The system currently extracts:

• Properties: BirthDate, DeathDate (models.py:330-380)
• Positions: Political positions held (enrichment_service.py:368-388)
• Birthplaces: Geographic birth locations (enrichment_service.py:390-410)

Adding citizenship and gender would follow similar patterns using the existing two-stage extraction approach.

This is just an idea at this stage and needs further discussion and planning.

Start by reading models.py:330-380 and enrichment_service.py:368-410 to understand the existing two-stage extraction for properties, positions, and birthplaces. Define the scope, acceptance criteria, and validation approach for citizenship and gender before implementation; the issue does not yet specify what done looks like.