Allegheny Reservoir
E269806
Allegheny Reservoir is a large man-made lake on the Allegheny River known for its recreational opportunities and surrounding forested landscapes in northwestern Pennsylvania and southwestern New York.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Allegheny Reservoir canonical | 4 |
| Allegheny Reservoir (part) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2455659 — 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: Allegheny Reservoir Context triple: [Allegheny River, reservoirCreated, Allegheny Reservoir]
-
A.
East Branch Reservoir
East Branch Reservoir is a man-made water supply reservoir in New York’s Croton Watershed that helps provide drinking water to New York City.
-
B.
West Branch Reservoir
West Branch Reservoir is a man-made water body in New York that serves as part of the New York City water supply system and offers limited recreational opportunities.
-
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.
Croton Reservoir
Croton Reservoir is a large man-made lake in Westchester County, New York, that serves as a key component of New York City's water supply system.
-
E.
Union Valley Reservoir
Union Valley Reservoir is a large man-made lake in California’s Sierra Nevada used for recreation and hydroelectric power within Eldorado National Forest.
- 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: Allegheny Reservoir Target entity description: Allegheny Reservoir is a large man-made lake on the Allegheny River known for its recreational opportunities and surrounding forested landscapes in northwestern Pennsylvania and southwestern New York.
-
A.
East Branch Reservoir
East Branch Reservoir is a man-made water supply reservoir in New York’s Croton Watershed that helps provide drinking water to New York City.
-
B.
West Branch Reservoir
West Branch Reservoir is a man-made water body in New York that serves as part of the New York City water supply system and offers limited recreational opportunities.
-
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.
Croton Reservoir
Croton Reservoir is a large man-made lake in Westchester County, New York, that serves as a key component of New York City's water supply system.
-
E.
Union Valley Reservoir
Union Valley Reservoir is a large man-made lake in California’s Sierra Nevada used for recreation and hydroelectric power within Eldorado National Forest.
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf |
body of water
ⓘ
man-made lake ⓘ reservoir ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| country |
United States of America
ⓘ
surface form:
United States
|
| hasActivity |
hiking along shoreline
ⓘ
picnicking ⓘ wildlife viewing ⓘ |
| hasEcosystem | freshwater lake ecosystem ⓘ |
| hasEnvironment | rural ⓘ |
| hasFeature | multi-state shoreline ⓘ |
| hasLandscape |
valleys
ⓘ
wooded hills ⓘ |
| hasRecreationArea | lakeside areas ⓘ |
| hasShorelineFeature | forested landscapes ⓘ |
| hasType | impoundment lake ⓘ |
| knownFor |
boating
ⓘ
camping ⓘ fishing ⓘ recreational opportunities ⓘ scenic views ⓘ |
| locatedIn |
New York
ⓘ
Pennsylvania ⓘ |
| locatedInRegion |
northeastern United States
ⓘ
northwestern Pennsylvania ⓘ southwestern New York ⓘ |
| locatedOnRiver | Allegheny River ⓘ |
| partOf | Allegheny River watershed ⓘ |
| surroundedBy | forests ⓘ |
| usedFor |
flood control
ⓘ
recreation ⓘ water storage ⓘ |
| watercourse | Allegheny River ⓘ |
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: Allegheny Reservoir Description of subject: Allegheny Reservoir is a large man-made lake on the Allegheny River known for its recreational opportunities and surrounding forested landscapes in northwestern Pennsylvania and southwestern New York.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Allegheny Reservoir (part)