{
  "answerability": "evidence_backed_claims_available",
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    {
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        "claim_id": "claim-park-leona-canyon-open-space-regional-preserve-boundary-geometry-20260924",
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        ],
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        "spatial_scope_ids": [],
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        "temporal_scope": null,
        "value": {
          "boundary_geometry_snapshot": {
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              "ebrpd:77"
            ],
            "path": "geometry/v0/snapshots/ebrpd-managed-land-boundaries-20260924.geojson",
            "sha256": "4e6558956f4f397816d719ff87554289e08dd495314b2d57c83d1634f083e3e5"
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          "boundary_type": "managed_land_status_polygons",
          "coordinate_precision_decimal_degrees": 5,
          "coordinate_reference_system": "EPSG:4326",
          "navigation_grade": false
        }
      },
      "evidence": [
        {
          "claim_id": "claim-park-leona-canyon-open-space-regional-preserve-boundary-geometry-20260924",
          "evidence_id": "evidence-park-leona-canyon-open-space-regional-preserve-boundary-geometry-20260924",
          "notes": "Supports the selected source polygons and their retained boundary semantics.",
          "observation_id": "observation-managed-land-boundaries-ebrpd-20260924",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
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          ],
          "content": "EBRPD's open-data layer reports the selected current managed-land polygons; parkland and landbank status remain separate.",
          "observation_id": "observation-managed-land-boundaries-ebrpd-20260924",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-24T22:00:00+00:00",
          "source_id": "source-ebrpd-managed-land-boundaries-20260924"
        }
      ],
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        {
          "locator": "https://services2.arcgis.com/jeEP9c9zZoQQwtck/arcgis/rest/services/EBRPD_Parks/FeatureServer/0",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-managed-land-boundaries-20260924"
        }
      ],
      "subject": {
        "entity_id": "park-leona-canyon-open-space-regional-preserve",
        "kind": "park",
        "name": "Leona Canyon Open Space Regional Preserve"
      }
    },
    {
      "claim": {
        "claim_id": "claim-leona-canyon-leona-trail-closure-2026",
        "evidence_ids": [
          "evidence-leona-canyon-leona-trail-closure-2026"
        ],
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          "ends_on": null,
          "starts_on": null
        },
        "value": {
          "cause": "culvert repair",
          "heavy_equipment": true,
          "segment": "Leona Trail between Artemisia Trail and Pyrite Trail",
          "source_updated_on": "2026-09-22",
          "status": "closed"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-leona-canyon-leona-trail-closure-2026",
          "evidence_id": "evidence-leona-canyon-leona-trail-closure-2026",
          "notes": "Live EBRPD alert; recheck the official alerts page before travel.",
          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Alerts and Closures table"
          ],
          "content": "The district alerts page published the park, trail, facility, and water conditions represented by the associated claims. Entries with insufficient page context were not promoted.",
          "observation_id": "observation-ebrpd-alerts-closures-20260922",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-22T18:30:00+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"
        }
      ],
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        "entity_id": "park-leona-canyon-open-space-regional-preserve",
        "kind": "park",
        "name": "Leona Canyon Open Space Regional Preserve"
      }
    },
    {
      "claim": {
        "claim_id": "claim-leona-canyon-visitor-profile",
        "evidence_ids": [
          "evidence-ebrpd-leona-canyon-visitor-profile"
        ],
        "predicate": "visitor_profile",
        "spatial_scope_ids": [
          "scope-leona-canyon-open-space-regional-preserve"
        ],
        "subject_id": "park-leona-canyon-open-space-regional-preserve",
        "temporal_scope": null,
        "value": {
          "access": [
            "Campus Drive staging area",
            "Merritt College"
          ],
          "acreage": 290,
          "activities": [
            "biking",
            "dogs",
            "hiking"
          ],
          "address": "Campus Drive off Keller Avenue, Oakland",
          "current_alert": {
            "as_of": "2026-09-20",
            "closure": "Leona Trail between Artemisia Trail and Pyrite Trail",
            "heavy_equipment": true,
            "reason": "culvert repair"
          },
          "developed_facilities": false,
          "hours": "05:00–22:00 unless otherwise posted or permitted",
          "merritt_college_parking": {
            "fee_required": true,
            "weekends": "closed"
          },
          "parking_fee_usd": 0,
          "water_access_rule": "People and dogs are not allowed in Rifle Range Creek; dogs that will not stay out must be leashed.",
          "wheelchair_accessible_facilities": false
        }
      },
      "evidence": [
        {
          "claim_id": "claim-leona-canyon-visitor-profile",
          "evidence_id": "evidence-ebrpd-leona-canyon-visitor-profile",
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          "observation_id": "observation-ebrpd-leona-canyon-visitor-profile",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Overview",
            "To Reach The Park",
            "Attractions"
          ],
          "content": "The live park page publishes the visitor profile represented by the associated claim, including access, operating information, facilities, and material restrictions.",
          "observation_id": "observation-ebrpd-leona-canyon-visitor-profile",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-20T07:00:00+00:00",
          "source_id": "source-ebrpd-leona-canyon-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/leona-canyon",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-leona-canyon-park-page"
        }
      ],
      "subject": {
        "entity_id": "park-leona-canyon-open-space-regional-preserve",
        "kind": "park",
        "name": "Leona Canyon Open Space Regional Preserve"
      }
    }
  ],
  "entity": {
    "entity_id": "park-leona-canyon-open-space-regional-preserve",
    "kind": "park",
    "name": "Leona Canyon Open Space Regional Preserve"
  },
  "gap_details": [],
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    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-preserves-batch-03",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/entities/park-leona-canyon-open-space-regional-preserve.json",
      "reason": "Add a deduplicated planning profile from the live EBRPD preserve page reviewed on 2026-09-20.",
      "record_id": "park-leona-canyon-open-space-regional-preserve",
      "record_type": "entity",
      "summary": "Add four additional previously uncaptured EBRPD preserve visitor profiles."
    },
    {
      "action": "ADD",
      "change_set_id": "change-managed-land-boundary-backfill-20260924",
      "evidence_refs": [
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      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-park-leona-canyon-open-space-regional-preserve-boundary-geometry-20260924.json",
      "reason": "Backfill reviewed managed-land boundary geometry",
      "record_id": "claim-park-leona-canyon-open-space-regional-preserve-boundary-geometry-20260924",
      "record_type": "claim",
      "summary": "Backfill reviewed boundary geometry for every published park, national park, and wilderness entity"
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20260922-ebrpd-current-conditions",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-leona-canyon-leona-trail-closure-2026.json",
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      "record_type": "claim",
      "summary": "Materialize current EBRPD closures and water disruptions for pre-trip rechecks."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-preserves-batch-03",
      "evidence_refs": [
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      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-leona-canyon-visitor-profile.json",
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      "record_id": "claim-leona-canyon-visitor-profile",
      "record_type": "claim",
      "summary": "Add four additional previously uncaptured EBRPD preserve visitor profiles."
    }
  ],
  "journey": [],
  "knowledge_gaps": [],
  "reference_evidence": [],
  "relationships": [],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}