{
  "schema_version": "2",
  "date": "Archive grouping date. It may be a publication date; use event_date for a sourced occurrence date.",
  "display_title": "Sanitized plain-text title for display; original accepted title remains in title.",
  "display_summary": "Sanitized story summary without RSS publisher/byline footer metadata; original accepted summary is retained.",
  "event_date": "Occurrence date supported by date_evidence; null when unknown.",
  "published_at": "First source publication timestamp; legacy sources may provide date only.",
  "updated_at": "Source modification timestamp; a correction is not a new engagement.",
  "timezone": "IANA timezone or explicit source timezone when known; null means unknown.",
  "timezone_evidence": "Source quotation or explicit diary timezone policy; a home city alone does not prove timezone.",
  "timezone_basis": "Explicit source timezone or documented source policy; unknown otherwise.",
  "tenure_evidence": "Officially sourced holder term supporting the named actor on this date; null when unassigned.",
  "time_local": "Source time as normalized by the adapter. Interpret only with timezone and date_evidence.",
  "date_evidence": "Evidence for event_date, or why only a publication date is known.",
  "location_evidence": "Evidence for an observed venue; subject-country tags alone do not prove presence.",
  "subject_countries": "Countries discussed by the source, distinct from the person's observed location.",
  "kind": "scheduled_event, press_publication, in_person_meeting, phone_call, video_call, joint_announcement, or another explicit source type.",
  "status": "unknown, scheduled or confirmed; unknown does not mean the event did not happen.",
  "attribution": "office_publication is institutional content, not proof of the current person's participation.",
  "leader_name": "Current configured officeholder label. Historical office publications require tenure/person attribution before treating this as the participant's identity.",
  "office_id": "Persistent office identity; an office can have different holders over time.",
  "person_id": "Verified participant identity when temporal attribution is supported; null means unassigned.",
  "person_name": "Named participant from verified attribution, not automatically the current officeholder label.",
  "tenure_status": "Whether the item falls within a verified tenure or has insufficient tenure evidence.",
  "tenure_start": "Verified start date for the current officeholder, with tenure_source and tenure_checked_at provenance.",
  "item_id": "Stable normalized item identity used for deduplication; source_item_id retains the publisher's identifier.",
  "revisions": "Earlier accepted source field versions; not separate activities.",
  "overseas": "Derived from supported location evidence; false may mean insufficient evidence, not confirmed presence at home.",
  "confirmed": "Explicit past meeting or call evidence; mentions and co-presence hypotheses are separate interactions.",
  "has_live_feed": "Latest source request succeeded and is not marked stale. has_configured_feed merely identifies an adapter/source.",
  "source_status": "Source-health outcome; cached records can remain available through an outage.",
  "csv_text": "Fields starting =,+,-,@ receive a leading apostrophe to prevent spreadsheet formula execution. JSON preserves original text.",
  "downloads": "Event CSV and JSON use gzip (.gz); decompress before use. Large datasets split into ordered self-contained parts listed in manifest.datasets. Each CSV part repeats its header; concatenate JSON dataset arrays in the listed order.",
  "agreement_stage": "announced, signed, implemented, postponed or unknown. Stage histories require affirmative dated evidence; time elapsed does not prove implementation. Reference cases are not a census of distinct treaties.",
  "status_history": "Dated source clauses supporting each agreement stage, retaining source URLs and immutable accepted event IDs.",
  "officeholder_history": "Selected officially sourced terms only; tenure_start is inclusive and tenure_end exclusive. Open end is the registry's latest verified state, not continuous re-verification.",
  "nulls": "Missing evidence stays null/blank; no location, event date or participation is invented."
}