{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-ebrpd-swimming-east-beach-in-park",
        "evidence_ids": [
          "evidence-ebrpd-swimming-east-beach-in-park"
        ],
        "predicate": "located_in",
        "spatial_scope_ids": [
          "scope-del-valle-east-beach"
        ],
        "subject_id": "beach-del-valle-east",
        "temporal_scope": null,
        "value": "park-del-valle-regional-park"
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-swimming-east-beach-in-park",
          "evidence_id": "evidence-ebrpd-swimming-east-beach-in-park",
          "notes": "",
          "observation_id": "observation-ebrpd-swimming-del-valle-hours",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The Del Valle swimming page lists lifeguards 11 AM-6 PM on weekends and holidays from May 16 through September 27, two beaches, and year-round swimming without lifeguards north of the boat ramp.",
          "observation_id": "observation-ebrpd-swimming-del-valle-hours",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-del-valle-swimming"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/recreation/swimming/del-valle",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-del-valle-swimming"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "beach-del-valle-east",
      "kind": "swim_beach",
      "name": "Del Valle East Swim Beach"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-del-valle-swimming",
      "evidence_refs": [
        "evidence-ebrpd-swimming-east-beach-in-park"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-ebrpd-swimming-east-beach-in-park.json",
      "reason": "Add district-wide and Del Valle-specific swimming evidence with explicit applicability.",
      "record_id": "claim-ebrpd-swimming-east-beach-in-park",
      "record_type": "claim",
      "summary": "Add two linked EBRPD swimming sources while keeping district registration rules separate from Del Valle-specific schedules, safety, fees, and current conditions."
    }
  ],
  "navigation": {
    "next_id": "claim-ebrpd-swimming-registration-applicability",
    "position": 261,
    "previous_id": "claim-ebrpd-swimming-del-valle-safety",
    "total": 3965
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "The Del Valle swimming page lists lifeguards 11 AM-6 PM on weekends and holidays from May 16 through September 27, two beaches, and year-round swimming without lifeguards north of the boat ramp.",
      "observation_id": "observation-ebrpd-swimming-del-valle-hours",
      "observed_at": null,
      "observer": "user-supplied page transcription",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-del-valle-swimming"
    }
  ],
  "record": {
    "claim_id": "claim-ebrpd-swimming-east-beach-in-park",
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      "evidence-ebrpd-swimming-east-beach-in-park"
    ],
    "predicate": "located_in",
    "spatial_scope_ids": [
      "scope-del-valle-east-beach"
    ],
    "subject_id": "beach-del-valle-east",
    "temporal_scope": null,
    "value": "park-del-valle-regional-park"
  },
  "record_type": "claim",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/recreation/swimming/del-valle",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-del-valle-swimming"
    }
  ]
}