Sepulveda Basin
E374412
Sepulveda Basin is a large flood-control and recreation area in the San Fernando Valley region of Los Angeles, featuring parks, wildlife habitats, and sports facilities.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sepulveda Basin canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3554029 — 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 Context triple: [Los Angeles River, hasSection, Sepulveda Basin]
-
A.
Socorro Basin
Socorro Basin is a geologic depression in central New Mexico that forms part of the Rio Grande Rift and hosts significant sedimentary deposits and geothermal activity.
-
B.
Raton Basin
Raton Basin is a geologic structural basin spanning southern Colorado and northern New Mexico, known for its coal, coalbed methane resources, and distinctive sedimentary rock formations.
-
C.
Aburrá Valley
Aburrá Valley is a densely populated valley in the Colombian Andes best known as the location of Medellín and its surrounding metropolitan area.
-
D.
Alvord Basin
Alvord Basin is an arid endorheic basin in southeastern Oregon known for its expansive playa, surrounding mountain ranges, and striking high-desert landscape.
-
E.
Albuquerque Basin
The Albuquerque Basin is a major structural and sedimentary basin in central New Mexico that forms part of the Rio Grande Rift and hosts much of the Albuquerque metropolitan area.
- 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 Target entity description: Sepulveda Basin is a large flood-control and recreation area in the San Fernando Valley region of Los Angeles, featuring parks, wildlife habitats, and sports facilities.
-
A.
Socorro Basin
Socorro Basin is a geologic depression in central New Mexico that forms part of the Rio Grande Rift and hosts significant sedimentary deposits and geothermal activity.
-
B.
Raton Basin
Raton Basin is a geologic structural basin spanning southern Colorado and northern New Mexico, known for its coal, coalbed methane resources, and distinctive sedimentary rock formations.
-
C.
Aburrá Valley
Aburrá Valley is a densely populated valley in the Colombian Andes best known as the location of Medellín and its surrounding metropolitan area.
-
D.
Alvord Basin
Alvord Basin is an arid endorheic basin in southeastern Oregon known for its expansive playa, surrounding mountain ranges, and striking high-desert landscape.
-
E.
Albuquerque Basin
The Albuquerque Basin is a major structural and sedimentary basin in central New Mexico that forms part of the Rio Grande Rift and hosts much of the Albuquerque metropolitan area.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
flood control basin
ⓘ
recreation area ⓘ urban park ⓘ |
| createdFor | flood mitigation ⓘ |
| crossedBy | Los Angeles River ⓘ |
| floodControlConstructed | mid-20th century ⓘ |
| hasActivity |
birdwatching
ⓘ
boating ⓘ cycling ⓘ fishing ⓘ hiking ⓘ team sports ⓘ |
| hasEcosystem |
riparian habitat
ⓘ
wetlands ⓘ |
| hasFacility |
archery range
ⓘ
bicycle paths ⓘ cricket fields ⓘ golf courses ⓘ jogging paths ⓘ lake ⓘ model airplane field ⓘ sports fields ⓘ tennis courts ⓘ |
| hasPart |
Anthony C. Beilenson Park
NERFINISHED
ⓘ
Lake Balboa Park ⓘ Balboa Sports Center ⓘ
surface form:
Sepulveda Basin Sports Complex
Sepulveda Basin Wildlife Reserve ⓘ Sepulveda Dam ⓘ Woodley Park ⓘ |
| hasUse |
flood control
ⓘ
recreation ⓘ wildlife habitat ⓘ |
| hasWildlife | migratory birds ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Los Angeles ⓘ Los Angeles County ⓘ San Fernando Valley ⓘ United States of America ⓘ
surface form:
United States
|
| managedBy | U.S. Army Corps of Engineers ⓘ |
| near |
Encino
ⓘ
Reseda ⓘ Van Nuys, California ⓘ
surface form:
Van Nuys
|
| openedForRecreation | 20th century ⓘ |
| ownedBy |
United States government
ⓘ
surface form:
United States federal government
|
| partOf |
Los Angeles River
ⓘ
surface form:
Los Angeles River watershed
|
| recreationManagedBy |
Los Angeles Department of Parks and Recreation
ⓘ
surface form:
City of Los Angeles Department of Recreation and Parks
|
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 Description of subject: Sepulveda Basin is a large flood-control and recreation area in the San Fernando Valley region of Los Angeles, featuring parks, wildlife habitats, and sports facilities.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.