[
  {
    "question_id": "tmcra_fixture_user",
    "question_type": "single-session-user",
    "question": "Which drink did the user choose?",
    "answer": "Tea.",
    "question_date": "2026-01-02",
    "haystack_session_ids": ["fixture-session-1"],
    "haystack_dates": ["2026-01-01"],
    "haystack_sessions": [[{"role": "user", "content": "I chose tea."}]]
  },
  {
    "question_id": "tmcra_fixture_update",
    "question_type": "knowledge-update",
    "question": "Where does the user live now?",
    "answer": "Shanghai.",
    "question_date": "2026-01-03",
    "haystack_session_ids": ["fixture-session-2"],
    "haystack_dates": ["2026-01-02"],
    "haystack_sessions": [[{"role": "user", "content": "I moved from Suzhou to Shanghai."}]]
  }
]