{
  "title": "Data dictionary",
  "scope": "This release contains normalized research leads, not a claim that every row is verified.",
  "keyFields": {
    "publication_status": "Editorial state: legacy lead, pending review, verified, disputed, or withdrawn.",
    "verification_level": "Evidence gate result. Legacy import values are unverified.",
    "date_precision": "Whether a date is known to the day, month, year, approximately, as a range, or unknown.",
    "participant_resolution_status": "Whether every person in a group event has been identified.",
    "assertion_status": "Support state for one discrete claim."
  }
}