New York City water supply system
E42502
The New York City water supply system is a vast network of reservoirs, aqueducts, tunnels, and distribution infrastructure that delivers potable water from upstate watersheds to millions of residents in New York City.
All labels observed (23)
How this entity was disambiguated
This entity first appeared as the object of triple T326502 — 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: New York City water supply system Context triple: [Croton water supply system, partOf, New York City water supply system]
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A.
New York City Department of Environmental Protection
The New York City Department of Environmental Protection is the municipal agency responsible for managing the city’s water supply, wastewater treatment, and environmental regulation to protect public health and natural resources.
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B.
Delaware Aqueduct
The Delaware Aqueduct is a historic 19th-century suspension aqueduct that carried the Delaware and Hudson Canal over the Delaware River and is now preserved as the oldest surviving wire suspension bridge in the United States.
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C.
New York State Canal System
The New York State Canal System is a network of interconnected canals and waterways in New York that evolved from historic routes like the Erie Canal and now supports recreation, tourism, and limited commercial navigation.
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D.
New Croton Reservoir
The New Croton Reservoir is a major water supply reservoir in Westchester County, New York, that forms a key part of New York City's Croton water system.
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E.
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.
- 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: New York City water supply system Target entity description: The New York City water supply system is a vast network of reservoirs, aqueducts, tunnels, and distribution infrastructure that delivers potable water from upstate watersheds to millions of residents in New York City.
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A.
New York City Department of Environmental Protection
The New York City Department of Environmental Protection is the municipal agency responsible for managing the city’s water supply, wastewater treatment, and environmental regulation to protect public health and natural resources.
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B.
Delaware Aqueduct
The Delaware Aqueduct is a historic 19th-century suspension aqueduct that carried the Delaware and Hudson Canal over the Delaware River and is now preserved as the oldest surviving wire suspension bridge in the United States.
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C.
New York State Canal System
The New York State Canal System is a network of interconnected canals and waterways in New York that evolved from historic routes like the Erie Canal and now supports recreation, tourism, and limited commercial navigation.
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D.
New Croton Reservoir
The New Croton Reservoir is a major water supply reservoir in Westchester County, New York, that forms a key part of New York City's Croton water system.
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E.
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.
- F. None of above. chosen
Statements (50)
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: New York City water supply system Description of subject: The New York City water supply system is a vast network of reservoirs, aqueducts, tunnels, and distribution infrastructure that delivers potable water from upstate watersheds to millions of residents in New York City.
Referenced by (96)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
New York City water supply watershed
this entity surface form:
New York City Catskill water supply system
this entity surface form:
New York City water supply reservoirs and tributaries
this entity surface form:
New York City water supply system (historical)
this entity surface form:
New York City Delaware System
this entity surface form:
New York City upstate drinking water system
subject surface form:
Mount Pleasant, New York
this entity surface form:
New York City water supply system region
this entity surface form:
New York City water distribution network
this entity surface form:
New York City upstate water supply infrastructure
this entity surface form:
New York City watershed
this entity surface form:
New York City upstate water supply system
this entity surface form:
New York City water supply watershed
this entity surface form:
New York City water supply system region
this entity surface form:
New York City watershed system
subject surface form:
Boyds Corner Reservoir