Sepulveda Basin Recreation Area (adjacent)
E242234
Sepulveda Basin Recreation Area (adjacent) is a large urban park and wildlife and flood-control basin in the San Fernando Valley offering extensive outdoor recreation, sports facilities, and natural open space.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sepulveda Basin Recreation Area (adjacent) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2187672 — 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: Sepulveda Basin Recreation Area (adjacent) Context triple: [Encino, Los Angeles, California, United States, hasRecreationArea, Sepulveda Basin Recreation Area (adjacent)]
-
A.
Crystal Basin Recreation Area
Crystal Basin Recreation Area is a popular outdoor destination in California’s Sierra Nevada offering camping, hiking, boating, and fishing around a series of mountain lakes and reservoirs.
-
B.
Del Valle Regional Park
Del Valle Regional Park is a popular East Bay park in California known for its large reservoir, outdoor recreation opportunities, and scenic rolling hills.
-
C.
Round Valley Recreation Area
Round Valley Recreation Area is a popular New Jersey state recreation site known for its deep reservoir, camping, hiking, fishing, and other outdoor activities.
-
D.
Coyote Hills Regional Park
Coyote Hills Regional Park is a scenic East Bay regional park in Fremont, California, known for its rolling hills, wetlands, wildlife viewing, and extensive hiking and biking trails along the San Francisco Bay.
-
E.
Echo Canyon State Park
Echo Canyon State Park is a scenic Nevada state park known for its reservoir, dramatic rock formations, and opportunities for camping, fishing, and hiking in a rugged desert canyon setting.
- 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: Sepulveda Basin Recreation Area (adjacent) Target entity description: Sepulveda Basin Recreation Area (adjacent) is a large urban park and wildlife and flood-control basin in the San Fernando Valley offering extensive outdoor recreation, sports facilities, and natural open space.
-
A.
Crystal Basin Recreation Area
Crystal Basin Recreation Area is a popular outdoor destination in California’s Sierra Nevada offering camping, hiking, boating, and fishing around a series of mountain lakes and reservoirs.
-
B.
Del Valle Regional Park
Del Valle Regional Park is a popular East Bay park in California known for its large reservoir, outdoor recreation opportunities, and scenic rolling hills.
-
C.
Round Valley Recreation Area
Round Valley Recreation Area is a popular New Jersey state recreation site known for its deep reservoir, camping, hiking, fishing, and other outdoor activities.
-
D.
Coyote Hills Regional Park
Coyote Hills Regional Park is a scenic East Bay regional park in Fremont, California, known for its rolling hills, wetlands, wildlife viewing, and extensive hiking and biking trails along the San Francisco Bay.
-
E.
Echo Canyon State Park
Echo Canyon State Park is a scenic Nevada state park known for its reservoir, dramatic rock formations, and opportunities for camping, fishing, and hiking in a rugged desert canyon setting.
- F. None of above. chosen
Statements (20)
| Predicate | Object |
|---|---|
| instanceOf |
recreation area
ⓘ
urban park ⓘ wildlife and flood-control basin ⓘ |
| hasEnvironment | urban ⓘ |
| hasFeature |
natural open space
ⓘ
outdoor recreation areas ⓘ sports facilities ⓘ wildlife habitat ⓘ |
| hasFunction |
flood control
ⓘ
recreation ⓘ |
| hasType | multi-use park ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Los Angeles ⓘ Los Angeles County ⓘ San Fernando Valley ⓘ United States of America ⓘ
surface form:
United States
|
| partOf | Sepulveda Basin ⓘ |
| usedFor |
leisure activities
ⓘ
nature observation ⓘ outdoor sports ⓘ |
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: Sepulveda Basin Recreation Area (adjacent) Description of subject: Sepulveda Basin Recreation Area (adjacent) is a large urban park and wildlife and flood-control basin in the San Fernando Valley offering extensive outdoor recreation, sports facilities, and natural open space.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
Encino, Los Angeles, California, United States
→
hasRecreationArea
→
Sepulveda Basin Recreation Area (adjacent)
ⓘ