{
  "_about": "Speaker IDs come from the transcript. Everything else here is DERIVED from what was said, and each derived fact points at the evidence unit that supports it. Roles are never assumed from turn order; where we only infer, we say so.",
  "transcript_id": "tx_001",
  "participants": [
    {
      "speaker_id": "spk_0",
      "role": "interviewer",
      "role_basis": "inferred",
      "role_basis_note": "spk_0 asks all questions and states nothing about themselves. No transcript span supports a role, so this is an inference, not evidence. Could equally be a salesperson or a researcher.",
      "supported_by": [],
      "identity": null
    },
    {
      "speaker_id": "spk_1",
      "role": "lead of the operations reporting team",
      "role_basis": "stated",
      "supported_by": ["ev_001"],
      "identity": null,
      "identity_note": "No name given. If this person appears in another transcript, linking them requires external metadata; nothing in the transcript itself allows it."
    }
  ],
  "mentioned_people": [
    {
      "referent_id": "ref_priya",
      "label": "Priya",
      "relationship_to_speaker": "member of spk_1's team",
      "supported_by": ["ev_008"],
      "note": "Not a participant. Mentioned as the person who actually handles the finance spreadsheet; spk_1 explicitly states their knowledge of that spreadsheet is secondhand via Priya."
    }
  ]
}