Lake Chabot Regional Park
E911415
Lake Chabot Regional Park is a popular East Bay recreational area centered around a large reservoir, offering hiking, fishing, boating, and picnicking opportunities amid wooded hills and scenic views.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Lake Chabot Regional Park canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11220946 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Lake Chabot Regional Park Context triple: [Castro Valley, California, nearbyPark, Lake Chabot Regional Park]
-
A.
Blue Lake Regional Park
Blue Lake Regional Park is a popular recreational area in the Portland metropolitan region known for its namesake lake, picnic areas, trails, and family-friendly outdoor activities.
-
B.
Briones Regional Park
Briones Regional Park is a large East Bay regional park in the hills of central Contra Costa County, California, known for its open grasslands, oak woodlands, and extensive hiking and equestrian trails.
-
C.
Andrew Molera State Park
Andrew Molera State Park is a coastal California state park in Big Sur known for its undeveloped beaches, scenic hiking trails, and rugged natural landscapes along the Pacific Ocean.
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D.
Skyline Regional Park
Skyline Regional Park is a desert mountain preserve in Buckeye, Arizona, known for its hiking, biking, and horseback-riding trails with scenic Sonoran Desert views.
-
E.
Hesperia Lake Park
Hesperia Lake Park is a public recreational area in Hesperia, California, known for its fishing lake, camping facilities, and outdoor community events.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Lake Chabot Regional Park Target entity description: Lake Chabot Regional Park is a popular East Bay recreational area centered around a large reservoir, offering hiking, fishing, boating, and picnicking opportunities amid wooded hills and scenic views.
-
A.
Blue Lake Regional Park
Blue Lake Regional Park is a popular recreational area in the Portland metropolitan region known for its namesake lake, picnic areas, trails, and family-friendly outdoor activities.
-
B.
Briones Regional Park
Briones Regional Park is a large East Bay regional park in the hills of central Contra Costa County, California, known for its open grasslands, oak woodlands, and extensive hiking and equestrian trails.
-
C.
Andrew Molera State Park
Andrew Molera State Park is a coastal California state park in Big Sur known for its undeveloped beaches, scenic hiking trails, and rugged natural landscapes along the Pacific Ocean.
-
D.
Skyline Regional Park
Skyline Regional Park is a desert mountain preserve in Buckeye, Arizona, known for its hiking, biking, and horseback-riding trails with scenic Sonoran Desert views.
-
E.
Hesperia Lake Park
Hesperia Lake Park is a public recreational area in Hesperia, California, known for its fishing lake, camping facilities, and outdoor community events.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
protected area
ⓘ
regional park ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| hasAccess | day use ⓘ |
| hasActivity |
boating
ⓘ
cycling ⓘ fishing ⓘ hiking ⓘ picnicking ⓘ trail running ⓘ |
| hasBodyOfWater | Lake Chabot NERFINISHED ⓘ |
| hasEcosystem |
grassland
ⓘ
oak woodland ⓘ |
| hasFeature |
boat rental facilities
ⓘ
campground ⓘ fishing piers ⓘ multi‑use trails ⓘ picnic areas ⓘ scenic views ⓘ wooded hills ⓘ |
| hasPurpose |
open space preservation
ⓘ
outdoor recreation ⓘ water supply protection ⓘ |
| hasRegulation |
boating subject to park rules
ⓘ
fishing requires appropriate license ⓘ |
| hasTrail |
Lake Chabot shoreline trails
ⓘ
multi‑use loop trails around Lake Chabot ⓘ |
| hasUse | recreation ⓘ |
| hasWildlife |
fish species in Lake Chabot
ⓘ
waterfowl ⓘ |
| isPopularWith |
anglers
ⓘ
boaters ⓘ hikers ⓘ local residents ⓘ |
| locatedIn |
Alameda County
ⓘ
surface form:
Alameda County, California
California, United States ⓘ
surface form:
California
East Bay, San Francisco Bay Area NERFINISHED ⓘ |
| managedBy | East Bay Regional Park District NERFINISHED ⓘ |
| near |
Castro Valley, California
NERFINISHED
ⓘ
Oakland, California NERFINISHED ⓘ San Leandro, California NERFINISHED ⓘ |
| partOf | East Bay Regional Park District system NERFINISHED ⓘ |
| surrounds | Lake Chabot Reservoir NERFINISHED ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Lake Chabot Regional Park Description of subject: Lake Chabot Regional Park is a popular East Bay recreational area centered around a large reservoir, offering hiking, fishing, boating, and picnicking opportunities amid wooded hills and scenic views.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.