{
  "answerability": "evidence_backed_claims_available",
  "claims": [
    {
      "claim": {
        "claim_id": "claim-del-valle-ebrpd-visitor-center-open",
        "evidence_ids": [
          "evidence-del-valle-ebrpd-visitor-center-open"
        ],
        "predicate": "operating_status",
        "spatial_scope_ids": [
          "scope-del-valle-visitor-center"
        ],
        "subject_id": "facility-del-valle-visitor-center",
        "temporal_scope": {
          "ends_on": "2026-09-20",
          "starts_on": "2026-09-20"
        },
        "value": "open"
      },
      "evidence": [
        {
          "claim_id": "claim-del-valle-ebrpd-visitor-center-open",
          "evidence_id": "evidence-del-valle-ebrpd-visitor-center-open",
          "notes": "",
          "observation_id": "observation-del-valle-ebrpd-current-amenities",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "At retrieval, the park was open with limited amenities; the swim-beach food concession was closed until further notice, storm-damaged trails required caution, construction equipment or noise could be present during working hours, and the visitor center was open.",
          "observation_id": "observation-del-valle-ebrpd-current-amenities",
          "observed_at": "2026-09-20T00:00:00+00:00",
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-del-valle-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/del-valle",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-del-valle-park-page"
        }
      ],
      "subject": {
        "entity_id": "facility-del-valle-visitor-center",
        "kind": "visitor_center",
        "name": "Del Valle Visitor Center"
      }
    }
  ],
  "entity": {
    "entity_id": "facility-del-valle-visitor-center",
    "kind": "visitor_center",
    "name": "Del Valle Visitor Center"
  },
  "gap_details": [],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-del-valle-ebrpd-park-page",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/entities/facility-del-valle-visitor-center.json",
      "reason": "Add EBRPD park-page evidence, preserve conflicts, and refine current Del Valle knowledge.",
      "record_id": "facility-del-valle-visitor-center",
      "record_type": "entity",
      "summary": "Add EBRPD Del Valle park-page evidence, corroborate the 150-site campground inventory, preserve the acreage conflict, and capture dated operational conditions and rechecks."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-del-valle-ebrpd-park-page",
      "evidence_refs": [
        "evidence-del-valle-ebrpd-visitor-center-open"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-del-valle-ebrpd-visitor-center-open.json",
      "reason": "Add EBRPD park-page evidence, preserve conflicts, and refine current Del Valle knowledge.",
      "record_id": "claim-del-valle-ebrpd-visitor-center-open",
      "record_type": "claim",
      "summary": "Add EBRPD Del Valle park-page evidence, corroborate the 150-site campground inventory, preserve the acreage conflict, and capture dated operational conditions and rechecks."
    }
  ],
  "journey": [],
  "knowledge_gaps": [],
  "reference_evidence": [],
  "relationships": [],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}