IRT Nostrand Avenue Line extension
E594264
The IRT Nostrand Avenue Line extension was a New York City Subway expansion project that extended service deeper into Brooklyn along Nostrand Avenue beyond its original terminus.
All labels observed (2)
| Label | Occurrences |
|---|---|
| IRT Nostrand Avenue Line extension canonical | 1 |
| IRT Nostrand Avenue Line via Franklin Avenue–Medgar Evers College station complex | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6343556 — 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: IRT Nostrand Avenue Line extension Context triple: [Church Avenue (IRT Nostrand Avenue Line), openedAsPartOf, IRT Nostrand Avenue Line extension]
-
A.
Eastern Parkway Line
The Eastern Parkway Line is a major New York City Subway route in Brooklyn that carries 2, 3, 4, and 5 trains along Eastern Parkway as part of the IRT system.
-
B.
New Lots Line
The New Lots Line is a New York City Subway line in Brooklyn that serves the easternmost portion of the IRT system, terminating at New Lots Avenue.
-
C.
Jerome Avenue Line
The Jerome Avenue Line is a New York City Subway route in the Bronx, primarily served by the 4 train and running along Jerome Avenue from the Yankee Stadium area toward the northern end of the borough.
-
D.
Second Avenue Subway
The Second Avenue Subway is a New York City Subway line on Manhattan’s East Side, built to relieve congestion on the Lexington Avenue Line and long envisioned as a major north–south transit corridor.
-
E.
Newark City Subway line
The Newark City Subway line is a light rail service in Newark, New Jersey, operating largely in former subway and streetcar tunnels to connect downtown Newark with surrounding neighborhoods and transit hubs.
- 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: IRT Nostrand Avenue Line extension Target entity description: The IRT Nostrand Avenue Line extension was a New York City Subway expansion project that extended service deeper into Brooklyn along Nostrand Avenue beyond its original terminus.
-
A.
Eastern Parkway Line
The Eastern Parkway Line is a major New York City Subway route in Brooklyn that carries 2, 3, 4, and 5 trains along Eastern Parkway as part of the IRT system.
-
B.
New Lots Line
The New Lots Line is a New York City Subway line in Brooklyn that serves the easternmost portion of the IRT system, terminating at New Lots Avenue.
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C.
Jerome Avenue Line
The Jerome Avenue Line is a New York City Subway route in the Bronx, primarily served by the 4 train and running along Jerome Avenue from the Yankee Stadium area toward the northern end of the borough.
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D.
Second Avenue Subway
The Second Avenue Subway is a New York City Subway line on Manhattan’s East Side, built to relieve congestion on the Lexington Avenue Line and long envisioned as a major north–south transit corridor.
-
E.
Newark City Subway line
The Newark City Subway line is a light rail service in Newark, New Jersey, operating largely in former subway and streetcar tunnels to connect downtown Newark with surrounding neighborhoods and transit hubs.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
New York City Subway expansion project
ⓘ
proposed transit infrastructure project ⓘ |
| city | New York City ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | third rail ⓘ |
| extendedBeyond | Flatbush Avenue–Brooklyn College station NERFINISHED ⓘ |
| intendedToServe | southern Brooklyn neighborhoods ⓘ |
| lineType | underground railway ⓘ |
| locatedIn |
Brooklyn
NERFINISHED
ⓘ
New York City ⓘ |
| modeOfTransport | rapid transit ⓘ |
| network | IRT Division NERFINISHED ⓘ |
| operator | Interborough Rapid Transit Company NERFINISHED ⓘ |
| partOf |
Interborough Rapid Transit Company
NERFINISHED
ⓘ
New York City Subway ⓘ |
| plannedFor | Nostrand Avenue corridor NERFINISHED ⓘ |
| primaryFunction | passenger transport ⓘ |
| purpose | extend subway service deeper into Brooklyn ⓘ |
| railwayLine | IRT Nostrand Avenue Line NERFINISHED ⓘ |
| region | New York metropolitan area NERFINISHED ⓘ |
| routeAlong | Nostrand Avenue NERFINISHED ⓘ |
| servedBorough | Brooklyn NERFINISHED ⓘ |
| status |
canceled project
ⓘ
unbuilt project ⓘ |
| usedTrackGauge | standard gauge ⓘ |
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: IRT Nostrand Avenue Line extension Description of subject: The IRT Nostrand Avenue Line extension was a New York City Subway expansion project that extended service deeper into Brooklyn along Nostrand Avenue beyond its original terminus.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Church Avenue (IRT Nostrand Avenue Line)
this entity surface form:
IRT Nostrand Avenue Line via Franklin Avenue–Medgar Evers College station complex