{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-del-valle-fishing-license-requirements",
        "evidence_ids": [
          "evidence-del-valle-fishing-license-requirements"
        ],
        "predicate": "fishing_credentials",
        "spatial_scope_ids": [
          "scope-lake-del-valle"
        ],
        "subject_id": "lake-del-valle",
        "temporal_scope": null,
        "value": {
          "california_license_required": true,
          "district_permit_required": true,
          "minimum_age": 16
        }
      },
      "evidence": [
        {
          "claim_id": "claim-del-valle-fishing-license-requirements",
          "evidence_id": "evidence-del-valle-fishing-license-requirements",
          "notes": "",
          "observation_id": "observation-ebrpd-fishing-licenses",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Anglers age 16 or older need a California fishing license for eligible District inland waters and a District fishing permit unless fishing at one of four named exceptions; Del Valle is not an exception. Current alerts should be checked.",
          "observation_id": "observation-ebrpd-fishing-licenses",
          "observed_at": null,
          "observer": "Wayproof source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-fishing"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/recreation/fishing",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-fishing"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "lake-del-valle",
      "kind": "lake",
      "name": "Lake Del Valle"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-del-valle-map-picnic-fishing",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-ebrpd-fishing-licenses.json",
      "reason": "Add the April 2026 Del Valle map plus official picnic and fishing evidence, preserving applicability gaps.",
      "record_id": "observation-ebrpd-fishing-licenses",
      "record_type": "observation",
      "summary": "Ingest the April 2026 park map, picnic inventory, and fishing requirements with explicit conflicts and spatial gaps."
    }
  ],
  "navigation": {
    "next_id": "observation-ebrpd-fishing-stocking",
    "position": 89,
    "previous_id": "observation-ebrpd-dumbarton-quarry-visitor-profile",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "Anglers age 16 or older need a California fishing license for eligible District inland waters and a District fishing permit unless fishing at one of four named exceptions; Del Valle is not an exception. Current alerts should be checked.",
      "observation_id": "observation-ebrpd-fishing-licenses",
      "observed_at": null,
      "observer": "Wayproof source review",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-fishing"
    }
  ],
  "record": {
    "artifact_refs": [],
    "content": "Anglers age 16 or older need a California fishing license for eligible District inland waters and a District fishing permit unless fishing at one of four named exceptions; Del Valle is not an exception. Current alerts should be checked.",
    "observation_id": "observation-ebrpd-fishing-licenses",
    "observed_at": null,
    "observer": "Wayproof source review",
    "retrieved_at": "2026-09-20T00:00:00+00:00",
    "source_id": "source-ebrpd-fishing"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/recreation/fishing",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-fishing"
    }
  ]
}