{
  "case_id": "community_f1_grounding_fixture_v1",
  "title": "Answer drift caused by wrong evidence anchor",
  "case_type": "grounding_failure",
  "family_target": {
    "primary_family": "F1",
    "secondary_family": "F5",
    "best_current_fit": "F1_N01 Retrieval Anchor Drift"
  },
  "user_question": "What is the correct answer supported by the verified source?",
  "case_summary": "The answer looks fluent but is based on the wrong retrieved evidence chunk.",
  "evidence_state": {
    "verified_source_available": true,
    "wrong_source_present": true,
    "reasoning_chain_visible": false
  },
  "routing_hint": "This case should route to grounding first because the answer is no longer tied to the right evidence anchor.",
  "first_repair_direction_hint": "re-grounding and evidence verification"
}