Vasona Reservoir
E520261
Vasona Reservoir is a man-made lake in Los Gatos, California, popular for recreation such as boating, fishing, and picnicking within Vasona Lake County Park.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Vasona Reservoir canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T5190618 — 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: Vasona Reservoir Context triple: [Los Gatos Creek Trail, nearbyWaterBody, Vasona Reservoir]
-
A.
Canistear Reservoir
Canistear Reservoir is a man-made lake in northern New Jersey that serves as a water supply and recreational area within the township of West Milford.
-
B.
Don Pedro Reservoir
Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
-
C.
Lusk Reservoir
Lusk Reservoir is a scenic man-made lake on the grounds of the United States Military Academy at West Point, often noted for its picturesque setting near the campus athletic facilities.
-
D.
Fengman Reservoir
Fengman Reservoir is a major artificial lake and hydroelectric reservoir on the upper Songhua River in Jilin Province, China, known for its role in power generation, flood control, and regional water supply.
-
E.
Wilson Reservoir
Wilson Reservoir is a man-made lake on the Tennessee River in Alabama, created by Wilson Dam, that serves as a key resource for hydroelectric power, navigation, and recreation.
- 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: Vasona Reservoir Target entity description: Vasona Reservoir is a man-made lake in Los Gatos, California, popular for recreation such as boating, fishing, and picnicking within Vasona Lake County Park.
-
A.
Canistear Reservoir
Canistear Reservoir is a man-made lake in northern New Jersey that serves as a water supply and recreational area within the township of West Milford.
-
B.
Don Pedro Reservoir
Don Pedro Reservoir is a large artificial lake in California’s Sierra Nevada foothills, primarily used for water storage, hydroelectric power generation, and recreation.
-
C.
Lusk Reservoir
Lusk Reservoir is a scenic man-made lake on the grounds of the United States Military Academy at West Point, often noted for its picturesque setting near the campus athletic facilities.
-
D.
Fengman Reservoir
Fengman Reservoir is a major artificial lake and hydroelectric reservoir on the upper Songhua River in Jilin Province, China, known for its role in power generation, flood control, and regional water supply.
-
E.
Wilson Reservoir
Wilson Reservoir is a man-made lake on the Tennessee River in Alabama, created by Wilson Dam, that serves as a key resource for hydroelectric power, navigation, and recreation.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | reservoir ⓘ |
| allowsActivity |
boating
ⓘ
fishing ⓘ picnicking ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Santa Clara County NERFINISHED ⓘ |
| createdBy | Vasona Dam NERFINISHED ⓘ |
| hasDam | Vasona Dam NERFINISHED ⓘ |
| hasFeature |
boat rentals
ⓘ
fishing access ⓘ picnic areas ⓘ trails ⓘ |
| hasNearbyAttraction | Oak Meadow Park NERFINISHED ⓘ |
| hasNearbyCity | Los Gatos NERFINISHED ⓘ |
| hasRecreationArea | Vasona Lake County Park NERFINISHED ⓘ |
| hasShoreLength | several kilometers (approximate) ⓘ |
| inflow | Los Gatos Creek NERFINISHED ⓘ |
| isAccessibleBy |
automobile
ⓘ
bicycle ⓘ |
| isPopularFor |
day use
ⓘ
family recreation ⓘ |
| locatedIn |
Los Gatos, California
NERFINISHED
ⓘ
Santa Clara County ⓘ
surface form:
Santa Clara County, California
Vasona Lake County Park NERFINISHED ⓘ |
| locatedInTimeZone | Pacific Time Zone ⓘ |
| managedBy | Santa Clara Valley Water District NERFINISHED ⓘ |
| near |
Highway 17
NERFINISHED
ⓘ
downtown Los Gatos NERFINISHED ⓘ |
| openToPublic | yes ⓘ |
| operator | Santa Clara Valley Water District NERFINISHED ⓘ |
| outflow | Los Gatos Creek NERFINISHED ⓘ |
| partOf | Los Gatos Creek watershed NERFINISHED ⓘ |
| prohibitsActivity | swimming ⓘ |
| region |
San Francisco Bay Area
ⓘ
South Bay NERFINISHED ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| usedFor |
boating
ⓘ
fishing ⓘ non-motorized boating ⓘ paddle boating ⓘ picnicking ⓘ recreation ⓘ sailing ⓘ |
| waterBodyType | freshwater lake ⓘ |
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: Vasona Reservoir Description of subject: Vasona Reservoir is a man-made lake in Los Gatos, California, popular for recreation such as boating, fishing, and picnicking within Vasona Lake County Park.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.