Boyds Corner Reservoir
E95920
Boyds Corner Reservoir is a small New York City water supply reservoir in Putnam County, New York, that forms part of the city’s Croton watershed system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Boyds Corner Reservoir canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T629124 — 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: Boyds Corner Reservoir Context triple: [Putnam County, contains, Boyds Corner Reservoir]
-
A.
Bog Brook Reservoir
Bog Brook Reservoir is a small New York City water supply reservoir in southeastern New York State that forms part of the Croton Watershed system.
-
B.
Hillview Reservoir
Hillview Reservoir is a key New York City water storage facility that serves as the final holding basin for treated water before it enters the city’s distribution system.
-
C.
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.
-
D.
Middle Branch Reservoir
Middle Branch Reservoir is a man-made lake in New York’s Croton Watershed that serves as part of the New York City water supply system.
-
E.
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.
- 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: Boyds Corner Reservoir Target entity description: Boyds Corner Reservoir is a small New York City water supply reservoir in Putnam County, New York, that forms part of the city’s Croton watershed system.
-
A.
Bog Brook Reservoir
Bog Brook Reservoir is a small New York City water supply reservoir in southeastern New York State that forms part of the Croton Watershed system.
-
B.
Hillview Reservoir
Hillview Reservoir is a key New York City water storage facility that serves as the final holding basin for treated water before it enters the city’s distribution system.
-
C.
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.
-
D.
Middle Branch Reservoir
Middle Branch Reservoir is a man-made lake in New York’s Croton Watershed that serves as part of the New York City water supply system.
-
E.
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.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
New York City water supply reservoir
ⓘ
artificial lake ⓘ reservoir ⓘ |
| basinCountry | United States of America ⓘ |
| country | United States of America ⓘ |
| hasRestriction | recreational activities limited to protect water quality ⓘ |
| inflow | West Branch Croton River ⓘ |
| locatedIn |
New York
ⓘ
surface form:
New York State
Putnam County, New York ⓘ Town of Kent, New York ⓘ |
| locatedInHydrologicRegion | Hudson River basin ⓘ |
| locatedInRegion | Hudson Valley ⓘ |
| locatedInTimeZone | Eastern Time Zone ⓘ |
| locatedNear | Boyds Corner, New York ⓘ |
| locatedNorthOf | New York City ⓘ |
| operator | New York City Department of Environmental Protection ⓘ |
| outflow | West Branch Croton River ⓘ |
| ownedBy |
New York City
ⓘ
surface form:
City of New York
|
| partOf |
Croton Watershed
ⓘ
surface form:
Croton River watershed
Croton water supply system ⓘ Croton Watershed ⓘ
surface form:
Croton watershed
New York City water supply system ⓘ |
| use |
drinking water source
ⓘ
municipal water supply ⓘ |
| watercourse | West Branch Croton 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: Boyds Corner Reservoir Description of subject: Boyds Corner Reservoir is a small New York City water supply reservoir in Putnam County, New York, that forms part of the city’s Croton watershed system.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.