{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-ohlone-overnight-reservation",
        "evidence_ids": [
          "evidence-ohlone-overnight-reservation",
          "evidence-ebrpd-sunol-ohlone-overnight-reservation",
          "evidence-reserveamerica-sunol-ohlone-overnight-reservation"
        ],
        "predicate": "overnight_camping_reservation",
        "spatial_scope_ids": [
          "scope-ohlone-wilderness-trail"
        ],
        "subject_id": "trail-ohlone-wilderness",
        "temporal_scope": null,
        "value": {
          "channel": "phone",
          "designated_sites_only": true,
          "minimum_advance_days": 2,
          "required": true
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ohlone-overnight-reservation",
          "evidence_id": "evidence-ohlone-overnight-reservation",
          "notes": "",
          "observation_id": "observation-ebrpd-ohlone-camping",
          "stance": "supports"
        },
        {
          "claim_id": "claim-ohlone-overnight-reservation",
          "evidence_id": "evidence-ebrpd-sunol-ohlone-overnight-reservation",
          "notes": "The Sunol park page corroborates designated-site reservation and two-business-day advance requirements.",
          "observation_id": "observation-ebrpd-sunol-ohlone-policy",
          "stance": "supports"
        },
        {
          "claim_id": "claim-ohlone-overnight-reservation",
          "evidence_id": "evidence-reserveamerica-sunol-ohlone-overnight-reservation",
          "notes": "The booking overview corroborates the overnight reservation requirement and expresses the lead time as 48 hours.",
          "observation_id": "observation-reserveamerica-sunol-overview",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Overnight use requires a separate reservation for a designated trail campsite, made by phone at least two days in advance. Reserved overnight parking is allowed at Del Valle, Sunol, and Mission Peak parking lots.",
          "observation_id": "observation-ebrpd-ohlone-camping",
          "observed_at": null,
          "observer": "Wayproof source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-ohlone-park-page"
        },
        {
          "artifact_refs": [
            "Ohlone Wilderness Trail"
          ],
          "content": "The page states that as of January 1, 2026 an Ohlone permit is not required and no additional permits will be sold. Overnight backpacking reservations remain required, and designated Ohlone Trail campsites require advance reservation two or more business days ahead.",
          "observation_id": "observation-ebrpd-sunol-ohlone-policy",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-sunol-park-page"
        },
        {
          "artifact_refs": [
            "Important Information",
            "Description",
            "Recreation",
            "Facilities"
          ],
          "content": "The rendered overview identifies Sunol as an EBRPD campsite facility with limited backpack sites, describes the Ohlone Wilderness Trail as a hiking destination, and requires backpack reservations for overnight stays at least 48 hours in advance.",
          "observation_id": "observation-reserveamerica-sunol-overview",
          "observed_at": null,
          "observer": "Wayproof live Chrome source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-reserveamerica-sunol-overview"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/ohlone",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-ohlone-park-page"
        },
        {
          "locator": "https://www.ebparks.org/parks/sunol",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-sunol-park-page"
        },
        {
          "locator": "https://www.reserveamerica.com/explore/sunol/EB/110028/overview",
          "publisher": "ReserveAmerica / East Bay Regional Park District",
          "source_id": "source-reserveamerica-sunol-overview"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-ohlone-trail-permit-not-required-2026",
        "evidence_ids": [
          "evidence-ohlone-trail-permit-not-required-2026",
          "evidence-ebrpd-sunol-ohlone-permit-not-required-2026"
        ],
        "predicate": "trail_permit_required",
        "spatial_scope_ids": [
          "scope-ohlone-wilderness-trail"
        ],
        "subject_id": "trail-ohlone-wilderness",
        "temporal_scope": {
          "ends_on": null,
          "starts_on": "2026-01-01"
        },
        "value": false
      },
      "evidence": [
        {
          "claim_id": "claim-ohlone-trail-permit-not-required-2026",
          "evidence_id": "evidence-ohlone-trail-permit-not-required-2026",
          "notes": "",
          "observation_id": "observation-ebrpd-ohlone-permit-2026",
          "stance": "supports"
        },
        {
          "claim_id": "claim-ohlone-trail-permit-not-required-2026",
          "evidence_id": "evidence-ebrpd-sunol-ohlone-permit-not-required-2026",
          "notes": "The Sunol park page independently corroborates the Ohlone park page's effective-date statement.",
          "observation_id": "observation-ebrpd-sunol-ohlone-policy",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "As of 2026-01-01, an Ohlone trail permit is not required and no additional permits will be sold. An overnight backpacking reservation is still required.",
          "observation_id": "observation-ebrpd-ohlone-permit-2026",
          "observed_at": "2026-01-01T00:00:00+00:00",
          "observer": "Wayproof source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-ohlone-park-page"
        },
        {
          "artifact_refs": [
            "Ohlone Wilderness Trail"
          ],
          "content": "The page states that as of January 1, 2026 an Ohlone permit is not required and no additional permits will be sold. Overnight backpacking reservations remain required, and designated Ohlone Trail campsites require advance reservation two or more business days ahead.",
          "observation_id": "observation-ebrpd-sunol-ohlone-policy",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-sunol-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/ohlone",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-ohlone-park-page"
        },
        {
          "locator": "https://www.ebparks.org/parks/sunol",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-sunol-park-page"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "trail-ohlone-wilderness",
      "kind": "trail",
      "name": "Ohlone Wilderness Trail"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-sunol-ohlone-sources",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-ebrpd-sunol-ohlone-policy.json",
      "reason": "Add source-grounded Sunol and Ohlone trail knowledge with explicit provenance and applicability.",
      "record_id": "observation-ebrpd-sunol-ohlone-policy",
      "record_type": "observation",
      "summary": "Add the EBRPD Sunol park page and ReserveAmerica Sunol overview, corroborate Ohlone permit and reservation policy, and add bounded Sunol access, safety, camping, and volatile-condition knowledge."
    }
  ],
  "navigation": {
    "next_id": "observation-ebrpd-sunol-recreation",
    "position": 155,
    "previous_id": "observation-ebrpd-sunol-current-conditions",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [
        "Ohlone Wilderness Trail"
      ],
      "content": "The page states that as of January 1, 2026 an Ohlone permit is not required and no additional permits will be sold. Overnight backpacking reservations remain required, and designated Ohlone Trail campsites require advance reservation two or more business days ahead.",
      "observation_id": "observation-ebrpd-sunol-ohlone-policy",
      "observed_at": null,
      "observer": "Wayproof live source review",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-sunol-park-page"
    }
  ],
  "record": {
    "artifact_refs": [
      "Ohlone Wilderness Trail"
    ],
    "content": "The page states that as of January 1, 2026 an Ohlone permit is not required and no additional permits will be sold. Overnight backpacking reservations remain required, and designated Ohlone Trail campsites require advance reservation two or more business days ahead.",
    "observation_id": "observation-ebrpd-sunol-ohlone-policy",
    "observed_at": null,
    "observer": "Wayproof live source review",
    "retrieved_at": "2026-09-20T00:00:00+00:00",
    "source_id": "source-ebrpd-sunol-park-page"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/parks/sunol",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-sunol-park-page"
    }
  ]
}