{
  "schema": "MAKNOW_FLR012_LAB_FIXTURES_v1",
  "note": "Synthetic evidence cards only. Text and labels are deterministic lab inputs, not claims about real products or policies.",
  "cases": [
    {
      "id": "grounded_baseline",
      "claim": "Release 4.2 was published on 2026-09-10.",
      "source_id": "SRC-A",
      "source_authority": "HIGH",
      "evidence_passage": "Release notes: Version 4.2 — published 2026-09-10.",
      "entailment": "ENTAILS",
      "freshness": "FRESH",
      "contradiction": false,
      "evidence_available": true,
      "model_confidence": 0.97,
      "post_source_authority": "HIGH",
      "post_entailment": "ENTAILS",
      "post_freshness": "FRESH",
      "post_contradiction": false,
      "post_evidence_available": true
    },
    {
      "id": "direct_contradiction",
      "claim": "The export limit is 50 units.",
      "source_id": "SRC-B",
      "source_authority": "HIGH",
      "evidence_passage": "Current policy: export limit is 20 units per account.",
      "entailment": "CONTRADICTS",
      "freshness": "FRESH",
      "contradiction": true,
      "evidence_available": true,
      "model_confidence": 0.99,
      "post_source_authority": "HIGH",
      "post_entailment": "ENTAILS",
      "post_freshness": "FRESH",
      "post_contradiction": false,
      "post_evidence_available": true
    },
    {
      "id": "citation_irrelevant",
      "claim": "Model Z supports offline batch inference.",
      "source_id": "SRC-C",
      "source_authority": "HIGH",
      "evidence_passage": "Model Z supports multilingual tokenization and streaming output.",
      "entailment": "IRRELEVANT",
      "freshness": "FRESH",
      "contradiction": false,
      "evidence_available": true,
      "model_confidence": 0.94,
      "post_source_authority": "HIGH",
      "post_entailment": "ENTAILS",
      "post_freshness": "FRESH",
      "post_contradiction": false,
      "post_evidence_available": true
    },
    {
      "id": "stale_authoritative_evidence",
      "claim": "The service costs 12 credits per run.",
      "source_id": "SRC-D",
      "source_authority": "HIGH",
      "evidence_passage": "Pricing snapshot 2025-12-01: 12 credits per run.",
      "entailment": "ENTAILS",
      "freshness": "STALE",
      "contradiction": false,
      "evidence_available": true,
      "model_confidence": 0.92,
      "post_source_authority": "HIGH",
      "post_entailment": "ENTAILS",
      "post_freshness": "FRESH",
      "post_contradiction": false,
      "post_evidence_available": true
    },
    {
      "id": "no_evidence",
      "claim": "The feature is available in every region.",
      "source_id": null,
      "source_authority": "UNKNOWN",
      "evidence_passage": "",
      "entailment": "NONE",
      "freshness": "UNKNOWN",
      "contradiction": false,
      "evidence_available": false,
      "model_confidence": 0.96,
      "post_source_authority": "UNKNOWN",
      "post_entailment": "NONE",
      "post_freshness": "UNKNOWN",
      "post_contradiction": false,
      "post_evidence_available": false
    },
    {
      "id": "ambiguous_entailment",
      "claim": "The benchmark proves production latency will stay below 100 ms.",
      "source_id": "SRC-E",
      "source_authority": "MEDIUM",
      "evidence_passage": "In a lab benchmark, median latency was 82 ms under the tested configuration.",
      "entailment": "AMBIGUOUS",
      "freshness": "FRESH",
      "contradiction": false,
      "evidence_available": true,
      "model_confidence": 0.91,
      "post_source_authority": "MEDIUM",
      "post_entailment": "AMBIGUOUS",
      "post_freshness": "FRESH",
      "post_contradiction": false,
      "post_evidence_available": true
    },
    {
      "id": "transfer_upgrade_with_new_evidence",
      "claim": "The API supports idempotency keys.",
      "source_id": "SRC-F-old",
      "source_authority": "HIGH",
      "evidence_passage": "Old reference does not mention idempotency keys.",
      "entailment": "IRRELEVANT",
      "freshness": "FRESH",
      "contradiction": false,
      "evidence_available": true,
      "model_confidence": 0.73,
      "post_source_authority": "HIGH",
      "post_entailment": "ENTAILS",
      "post_freshness": "FRESH",
      "post_contradiction": false,
      "post_evidence_available": true
    },
    {
      "id": "transfer_prior_support_becomes_stale",
      "claim": "The default retention period is 30 days.",
      "source_id": "SRC-G",
      "source_authority": "HIGH",
      "evidence_passage": "Policy snapshot: default retention is 30 days.",
      "entailment": "ENTAILS",
      "freshness": "FRESH",
      "contradiction": false,
      "evidence_available": true,
      "model_confidence": 0.88,
      "post_source_authority": "HIGH",
      "post_entailment": "ENTAILS",
      "post_freshness": "STALE",
      "post_contradiction": false,
      "post_evidence_available": true
    }
  ]
}