{
  "answerability": "evidence_backed_claims_available",
  "claims": [
    {
      "claim": {
        "claim_id": "claim-hetch-hetchy-reservoir-use-rules",
        "evidence_ids": [
          "evidence-hetch-hetchy-reservoir-use-rules"
        ],
        "predicate": "visitor_use_rules",
        "spatial_scope_ids": [
          "scope-hetch-hetchy"
        ],
        "subject_id": "reservoir-hetch-hetchy",
        "temporal_scope": null,
        "value": {
          "boating": false,
          "pets_on_dam_or_hiking_trails": false,
          "reason": "protect drinking-water source",
          "swimming": false
        }
      },
      "evidence": [
        {
          "claim_id": "claim-hetch-hetchy-reservoir-use-rules",
          "evidence_id": "evidence-hetch-hetchy-reservoir-use-rules",
          "notes": "",
          "observation_id": "observation-nps-yosemite-hetch-hetchy-hikes-20260925",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS publishes Hetch Hetchy day and multi-day route starts, distances, elevation changes, use rules, and permit context.",
          "observation_id": "observation-nps-yosemite-hetch-hetchy-hikes-20260925",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-25T00:00:00+00:00",
          "source_id": "source-nps-yosemite-hetch-hetchy-hikes"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/yose/planyourvisit/hetchhetchy.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-yosemite-hetch-hetchy-hikes"
        }
      ],
      "subject": {
        "entity_id": "reservoir-hetch-hetchy",
        "kind": "waterbody",
        "name": "Hetch Hetchy Reservoir"
      }
    }
  ],
  "entity": {
    "entity_id": "reservoir-hetch-hetchy",
    "kind": "waterbody",
    "name": "Hetch Hetchy Reservoir"
  },
  "gap_details": [],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260925-yosemite-hetch-hetchy-depth",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/entities/reservoir-hetch-hetchy.json",
      "reason": "Add reviewed Hetch Hetchy planning depth.",
      "record_id": "reservoir-hetch-hetchy",
      "record_type": "entity",
      "summary": "Add official-source Hetch Hetchy routes, access, reservoir rules, facilities, dated operational evidence, reviewed map points, and explicit gaps."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20260925-yosemite-hetch-hetchy-depth",
      "evidence_refs": [
        "evidence-hetch-hetchy-reservoir-use-rules"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-hetch-hetchy-reservoir-use-rules.json",
      "reason": "Add reviewed Hetch Hetchy planning depth.",
      "record_id": "claim-hetch-hetchy-reservoir-use-rules",
      "record_type": "claim",
      "summary": "Add official-source Hetch Hetchy routes, access, reservoir rules, facilities, dated operational evidence, reviewed map points, and explicit gaps."
    }
  ],
  "journey": [],
  "knowledge_gaps": [],
  "reference_evidence": [],
  "relationships": [],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}