Union Grove, New York
E761253
Union Grove, New York was a former Catskills hamlet that was permanently submerged in the mid-20th century to create the Pepacton Reservoir, part of New York City’s water supply system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Union Grove, New York canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8849859 — 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: Union Grove, New York Context triple: [Pepacton Reservoir, formedBySubmerging, Union Grove, New York]
-
A.
Napanoch, New York
Napanoch, New York is a small hamlet in Ulster County’s Town of Wawarsing in the Catskills region, historically shaped by its rural setting and former correctional facilities.
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B.
Chittenango, New York
Chittenango, New York is a small village in Madison County best known as the birthplace of "The Wonderful Wizard of Oz" author L. Frank Baum and for its Oz-themed local attractions.
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C.
Callicoon, New York
Callicoon, New York is a small hamlet and popular Delaware River community in the Catskills region known for its historic downtown and outdoor recreation.
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D.
Tuckahoe, New York
Tuckahoe, New York is a small suburban village in southeastern New York known for its residential neighborhoods and proximity to New York City.
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E.
Palenville, New York
Palenville, New York is a small hamlet in the Catskill Mountains known as a historic artists’ colony and gateway to nearby natural attractions.
- 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: Union Grove, New York Target entity description: Union Grove, New York was a former Catskills hamlet that was permanently submerged in the mid-20th century to create the Pepacton Reservoir, part of New York City’s water supply system.
-
A.
Napanoch, New York
Napanoch, New York is a small hamlet in Ulster County’s Town of Wawarsing in the Catskills region, historically shaped by its rural setting and former correctional facilities.
-
B.
Chittenango, New York
Chittenango, New York is a small village in Madison County best known as the birthplace of "The Wonderful Wizard of Oz" author L. Frank Baum and for its Oz-themed local attractions.
-
C.
Callicoon, New York
Callicoon, New York is a small hamlet and popular Delaware River community in the Catskills region known for its historic downtown and outdoor recreation.
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D.
Tuckahoe, New York
Tuckahoe, New York is a small suburban village in southeastern New York known for its residential neighborhoods and proximity to New York City.
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E.
Palenville, New York
Palenville, New York is a small hamlet in the Catskill Mountains known as a historic artists’ colony and gateway to nearby natural attractions.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
former hamlet
ⓘ
submerged settlement ⓘ |
| causeOfPopulationDisplacement | relocation for reservoir project ⓘ |
| country | United States of America ⓘ |
| documentedIn |
New York City water supply planning records
ⓘ
regional Catskills histories ⓘ |
| hasHeritageDesignation | lost Catskills community ⓘ |
| historicalRegion | Catskills NERFINISHED ⓘ |
| historicalUse |
local commercial center
ⓘ
rural residential community ⓘ |
| locatedIn | Catskill Mountains NERFINISHED ⓘ |
| locatedInAdministrativeEntity |
Delaware County, New York
NERFINISHED
ⓘ
New York State NERFINISHED ⓘ |
| locatedInTime |
19th century
ⓘ
early 20th century ⓘ |
| locatedInWatershed | Delaware River watershed NERFINISHED ⓘ |
| locatedNear |
Andes, New York
NERFINISHED
ⓘ
Downsville, New York NERFINISHED ⓘ |
| locatedNextTo | East Branch Delaware River NERFINISHED ⓘ |
| locatedUnder | Pepacton Reservoir NERFINISHED ⓘ |
| partOf | area condemned for Pepacton Reservoir ⓘ |
| partOfProject | New York City Catskill water supply system NERFINISHED ⓘ |
| reasonForDestruction | construction of Pepacton Reservoir ⓘ |
| replacedBy | Pepacton Reservoir NERFINISHED ⓘ |
| status | permanently submerged ⓘ |
| submergedBy | Pepacton Reservoir NERFINISHED ⓘ |
| submergedFor | New York City water supply system NERFINISHED ⓘ |
| submergedInDecade | 1950s ⓘ |
| submergedInPeriod | mid-20th century ⓘ |
| waterBody | Pepacton Reservoir 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: Union Grove, New York Description of subject: Union Grove, New York was a former Catskills hamlet that was permanently submerged in the mid-20th century to create the Pepacton Reservoir, part of New York City’s water supply system.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.