1 train (IRT Broadway–Seventh Avenue Line)
E152819
The 1 train is a New York City Subway service running along the IRT Broadway–Seventh Avenue Line, providing local service through Manhattan and into the Bronx.
All labels observed (5)
How this entity was disambiguated
This entity first appeared as the object of triple T1164614 — 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: 1 train (IRT Broadway–Seventh Avenue Line) Context triple: [Upper Manhattan, servedBy, 1 train (IRT Broadway–Seventh Avenue Line)]
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A.
L train
The L train is a New York City Subway service that runs crosstown along 14th Street in Manhattan and through Williamsburg and Bushwick in Brooklyn, known for its heavy ridership and role as a key connector between the boroughs.
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B.
W train
The W train is a local service of the New York City Subway that runs primarily in Manhattan and Queens, connecting Astoria to Lower Manhattan via the Broadway Line.
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C.
N train
The N train is a New York City Subway service that runs on the BMT Broadway Line in Manhattan and into Brooklyn, providing both local and express transit.
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D.
BMT Broadway Line
The BMT Broadway Line is a major New York City Subway trunk line in Manhattan, carrying N, Q, R, and W trains through Midtown and Lower Manhattan via Broadway.
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E.
New York City Subway B line
The New York City Subway B line is an express service in the IND Sixth Avenue Line that runs through Manhattan and Brooklyn, serving major destinations including Yankee Stadium in the Bronx during certain times.
- 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: 1 train (IRT Broadway–Seventh Avenue Line) Target entity description: The 1 train is a New York City Subway service running along the IRT Broadway–Seventh Avenue Line, providing local service through Manhattan and into the Bronx.
-
A.
L train
The L train is a New York City Subway service that runs crosstown along 14th Street in Manhattan and through Williamsburg and Bushwick in Brooklyn, known for its heavy ridership and role as a key connector between the boroughs.
-
B.
W train
The W train is a local service of the New York City Subway that runs primarily in Manhattan and Queens, connecting Astoria to Lower Manhattan via the Broadway Line.
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C.
N train
The N train is a New York City Subway service that runs on the BMT Broadway Line in Manhattan and into Brooklyn, providing both local and express transit.
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D.
BMT Broadway Line
The BMT Broadway Line is a major New York City Subway trunk line in Manhattan, carrying N, Q, R, and W trains through Midtown and Lower Manhattan via Broadway.
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E.
New York City Subway B line
The New York City Subway B line is an express service in the IND Sixth Avenue Line that runs through Manhattan and Brooklyn, serving major destinations including Yankee Stadium in the Bronx during certain times.
- F. None of above. chosen
Statements (61)
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: 1 train (IRT Broadway–Seventh Avenue Line) Description of subject: The 1 train is a New York City Subway service running along the IRT Broadway–Seventh Avenue Line, providing local service through Manhattan and into the Bronx.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Van Cortlandt Park
this entity surface form:
New York City Subway 1 train at Van Cortlandt Park–242nd Street
this entity surface form:
New York City Subway 1 train
this entity surface form:
New York City Subway 1 train (nearby at 231st Street and 238th Street)
subject surface form:
Kingsbridge
this entity surface form:
New York City Subway 1 train
this entity surface form:
New York City Subway 1 train at 181st Street
this entity surface form:
New York City Subway 1 train
this entity surface form:
New York City Subway 1 train