Del Valle Regional Park
E110717
Del Valle Regional Park is a popular East Bay park in California known for its large reservoir, outdoor recreation opportunities, and scenic rolling hills.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Del Valle Regional Park canonical | 3 |
| Del Valle Regional Park (nearby) | 1 |
| Prado Regional Park (nearby) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T797841 — 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: Del Valle Regional Park Context triple: [Contra Costa County, hasRegionalPark, Del Valle Regional Park]
-
A.
Contra Loma Regional Park
Contra Loma Regional Park is a public recreation area in Contra Costa County, California, known for its reservoir, fishing, swimming lagoon, and hiking and biking trails.
-
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.
Fundidora Park
Fundidora Park is a large urban park and cultural complex in Monterrey, Mexico, built on the grounds of a former steel foundry and known for its industrial heritage, museums, and recreational spaces.
-
E.
Lomond Hills Regional Park
Lomond Hills Regional Park is a protected natural area in Fife, Scotland, known for its scenic upland landscapes, walking trails, and wildlife habitats around the Lomond Hills.
- 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: Del Valle Regional Park Target entity description: Del Valle Regional Park is a popular East Bay park in California known for its large reservoir, outdoor recreation opportunities, and scenic rolling hills.
-
A.
Contra Loma Regional Park
Contra Loma Regional Park is a public recreation area in Contra Costa County, California, known for its reservoir, fishing, swimming lagoon, and hiking and biking trails.
-
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.
Fundidora Park
Fundidora Park is a large urban park and cultural complex in Monterrey, Mexico, built on the grounds of a former steel foundry and known for its industrial heritage, museums, and recreational spaces.
-
E.
Lomond Hills Regional Park
Lomond Hills Regional Park is a protected natural area in Fife, Scotland, known for its scenic upland landscapes, walking trails, and wildlife habitats around the Lomond Hills.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
recreation area
ⓘ
regional park ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| hasActivityRestriction |
seasonal fire restrictions
ⓘ
swimming subject to lifeguard and water quality conditions ⓘ |
| hasBodyOfWater | Lake Del Valle ⓘ |
| hasEcosystem |
California oak woodland
ⓘ
grassland ⓘ |
| hasFacility |
boat launch
ⓘ
campgrounds ⓘ picnic areas ⓘ swim beach ⓘ trails ⓘ |
| hasFeature |
canyons
ⓘ
grasslands ⓘ oak woodlands ⓘ reservoir ⓘ rolling hills ⓘ |
| hasRecreationType |
day use
ⓘ
overnight camping ⓘ |
| hasTrailConnection |
East Bay Regional Park District trail system
ⓘ
Ohlone Wilderness Trail ⓘ |
| hasWildlife |
birds of prey
ⓘ
deer ⓘ various waterfowl ⓘ |
| isPopularFor |
outdoor recreation
ⓘ
scenic views ⓘ water-based recreation ⓘ |
| locatedIn |
Alameda County
ⓘ
surface form:
Alameda County, California
California, United States ⓘ
surface form:
California
East Bay ⓘ
surface form:
East Bay, San Francisco Bay Area
|
| nearbyCity |
Livermore
ⓘ
surface form:
Livermore, California
|
| operator | East Bay Regional Park District ⓘ |
| partOf |
East Bay Regional Park District
ⓘ
surface form:
East Bay Regional Park District system
|
| usedFor |
boating
ⓘ
camping ⓘ fishing ⓘ hiking ⓘ horseback riding ⓘ picnicking ⓘ swimming ⓘ wildlife viewing ⓘ |
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: Del Valle Regional Park Description of subject: Del Valle Regional Park is a popular East Bay park in California known for its large reservoir, outdoor recreation opportunities, and scenic rolling hills.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Del Valle Regional Park (nearby)