{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-del-valle-fishing-stocking",
        "evidence_ids": [
          "evidence-del-valle-fishing-stocking"
        ],
        "predicate": "fish_stocking",
        "spatial_scope_ids": [
          "scope-lake-del-valle"
        ],
        "subject_id": "lake-del-valle",
        "temporal_scope": null,
        "value": {
          "channel_catfish": "summer",
          "rainbow_trout": "fall_through_spring"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-del-valle-fishing-stocking",
          "evidence_id": "evidence-del-valle-fishing-stocking",
          "notes": "",
          "observation_id": "observation-ebrpd-fishing-stocking",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The District lists Del Valle among waters stocked with rainbow trout from fall through spring and channel catfish in summer, and manages other gamefish including bass, bluegill, sunfish, and crappie.",
          "observation_id": "observation-ebrpd-fishing-stocking",
          "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"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-alerts-closures-live",
        "evidence_ids": [
          "evidence-ebrpd-alerts-closures-live"
        ],
        "predicate": "live_alert_source",
        "spatial_scope_ids": [
          "scope-del-valle-park"
        ],
        "subject_id": "park-del-valle-regional-park",
        "temporal_scope": null,
        "value": {
          "use": "pretrip_recheck",
          "volatile": true
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-alerts-closures-live",
          "evidence_id": "evidence-ebrpd-alerts-closures-live",
          "notes": "",
          "observation_id": "observation-ebrpd-alerts-recheck",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The live district alerts and closures page is a volatile source for conditions that may affect park access, facilities, water recreation, fire restrictions, and closures.",
          "observation_id": "observation-ebrpd-alerts-recheck",
          "observed_at": null,
          "observer": "Wayproof source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-alerts-closures"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/alerts-closures",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-alerts-closures"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "lake-del-valle",
      "kind": "lake",
      "name": "Lake Del Valle"
    },
    {
      "entity_id": "park-del-valle-regional-park",
      "kind": "park",
      "name": "Del Valle Regional Park"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-del-valle-map-picnic-fishing",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/gaps/gap-del-valle-current-fishing-conditions.json",
      "reason": "Add the April 2026 Del Valle map plus official picnic and fishing evidence, preserving applicability gaps.",
      "record_id": "gap-del-valle-current-fishing-conditions",
      "record_type": "gap",
      "summary": "Ingest the April 2026 park map, picnic inventory, and fishing requirements with explicit conflicts and spatial gaps."
    }
  ],
  "navigation": {
    "next_id": "gap-del-valle-current-flood-closure",
    "position": 9,
    "previous_id": "gap-del-valle-current-fire-status",
    "total": 299
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "The live district alerts and closures page is a volatile source for conditions that may affect park access, facilities, water recreation, fire restrictions, and closures.",
      "observation_id": "observation-ebrpd-alerts-recheck",
      "observed_at": null,
      "observer": "Wayproof source review",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-alerts-closures"
    },
    {
      "artifact_refs": [],
      "content": "The District lists Del Valle among waters stocked with rainbow trout from fall through spring and channel catfish in summer, and manages other gamefish including bass, bluegill, sunfish, and crappie.",
      "observation_id": "observation-ebrpd-fishing-stocking",
      "observed_at": null,
      "observer": "Wayproof source review",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-fishing"
    }
  ],
  "record": {
    "gap_id": "gap-del-valle-current-fishing-conditions",
    "question": "What current conditions or closures affect fishing at Del Valle?",
    "reason": "Fishing conditions and stocking information are operationally volatile and should be checked near departure.",
    "related_ids": [
      "claim-del-valle-fishing-stocking",
      "claim-ebrpd-alerts-closures-live"
    ]
  },
  "record_type": "gap",
  "related_records": [
    {
      "record": {
        "claim_id": "claim-del-valle-fishing-stocking",
        "evidence_ids": [
          "evidence-del-valle-fishing-stocking"
        ],
        "predicate": "fish_stocking",
        "spatial_scope_ids": [
          "scope-lake-del-valle"
        ],
        "subject_id": "lake-del-valle",
        "temporal_scope": null,
        "value": {
          "channel_catfish": "summer",
          "rainbow_trout": "fall_through_spring"
        }
      },
      "record_id": "claim-del-valle-fishing-stocking",
      "record_type": "claim"
    },
    {
      "record": {
        "claim_id": "claim-ebrpd-alerts-closures-live",
        "evidence_ids": [
          "evidence-ebrpd-alerts-closures-live"
        ],
        "predicate": "live_alert_source",
        "spatial_scope_ids": [
          "scope-del-valle-park"
        ],
        "subject_id": "park-del-valle-regional-park",
        "temporal_scope": null,
        "value": {
          "use": "pretrip_recheck",
          "volatile": true
        }
      },
      "record_id": "claim-ebrpd-alerts-closures-live",
      "record_type": "claim"
    }
  ],
  "sources": [
    {
      "locator": "https://www.ebparks.org/alerts-closures",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-alerts-closures"
    },
    {
      "locator": "https://www.ebparks.org/recreation/fishing",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-fishing"
    }
  ]
}