Tappan Reservoir
E875048
Tappan Reservoir is a man-made lake in New Jersey that serves as a major drinking water supply and flood-control resource within the Hackensack River watershed.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lake Tappan Reservoir | 1 |
| Tappan Reservoir canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10520905 — 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: Tappan Reservoir Context triple: [Hackensack River watershed, containsWaterBody, Tappan Reservoir]
-
A.
Katonah Reservoir
Katonah Reservoir is a man-made water body in Westchester County, New York, that forms part of the New York City water supply system.
-
B.
Kensico Reservoir
Kensico Reservoir is a major New York City water supply reservoir located in Westchester County, New York, known for its role in storing and regulating drinking water from the Catskill and Delaware systems.
-
C.
Palisades Reservoir
Palisades Reservoir is a large man-made lake on the Snake River in eastern Idaho and western Wyoming, popular for boating, fishing, and irrigation storage.
-
D.
Titicus Reservoir
Titicus Reservoir is a man-made lake in Westchester County, New York, that serves as one of the key water supply reservoirs for New York City.
-
E.
Boonton Reservoir
Boonton Reservoir is a man-made lake in northern New Jersey that serves as a major water supply source and recreational area for the surrounding region.
- 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: Tappan Reservoir Target entity description: Tappan Reservoir is a man-made lake in New Jersey that serves as a major drinking water supply and flood-control resource within the Hackensack River watershed.
-
A.
Katonah Reservoir
Katonah Reservoir is a man-made water body in Westchester County, New York, that forms part of the New York City water supply system.
-
B.
Kensico Reservoir
Kensico Reservoir is a major New York City water supply reservoir located in Westchester County, New York, known for its role in storing and regulating drinking water from the Catskill and Delaware systems.
-
C.
Palisades Reservoir
Palisades Reservoir is a large man-made lake on the Snake River in eastern Idaho and western Wyoming, popular for boating, fishing, and irrigation storage.
-
D.
Titicus Reservoir
Titicus Reservoir is a man-made lake in Westchester County, New York, that serves as one of the key water supply reservoirs for New York City.
-
E.
Boonton Reservoir
Boonton Reservoir is a man-made lake in northern New Jersey that serves as a major water supply source and recreational area for the surrounding region.
- F. None of above. chosen
Statements (24)
| Predicate | Object |
|---|---|
| instanceOf |
drinking water reservoir
ⓘ
reservoir ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Bergen County NERFINISHED ⓘ |
| function |
regulate river flow in the Hackensack River system
ⓘ
store raw water for treatment and distribution ⓘ |
| hasType | surface water reservoir ⓘ |
| isInWatershed | Hackensack River watershed NERFINISHED ⓘ |
| isManMade | true ⓘ |
| locatedIn |
Bergen County, New Jersey
NERFINISHED
ⓘ
New Jersey, United States ⓘ
surface form:
New Jersey
United States of America ⓘ
surface form:
United States
|
| locatedNear |
Lake Tappan
NERFINISHED
ⓘ
Oradell Reservoir NERFINISHED ⓘ Tappan, New York NERFINISHED ⓘ |
| partOf |
Hackensack River watershed
NERFINISHED
ⓘ
regional water supply system for northern New Jersey ⓘ |
| state |
New Jersey, United States
ⓘ
surface form:
New Jersey
|
| use |
drinking water supply
ⓘ
flood control ⓘ municipal water supply ⓘ recreation (limited) ⓘ |
| watercourse | Hackensack River NERFINISHED ⓘ |
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: Tappan Reservoir Description of subject: Tappan Reservoir is a man-made lake in New Jersey that serves as a major drinking water supply and flood-control resource within the Hackensack River watershed.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lake Tappan Reservoir