BMT 2 (Fourth Avenue Local)
E106043
BMT 2 (Fourth Avenue Local) was a former Brooklyn–Manhattan Transit Corporation subway service that operated local trains along Brooklyn’s Fourth Avenue Line in New York City.
All labels observed (3)
| Label | Occurrences |
|---|---|
| BMT 2 (Fourth Avenue Local) canonical | 1 |
| BMT Broadway–Fourth Avenue Local | 1 |
| RR (Broadway–Fourth Avenue Local) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T893802 — 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: BMT 2 (Fourth Avenue Local) Context triple: [R train, historicalPredecessor, BMT 2 (Fourth Avenue Local)]
-
A.
BMT Nassau Street Line
The BMT Nassau Street Line is a New York City Subway line in Lower Manhattan that primarily carries J and Z trains through the Financial District.
-
B.
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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C.
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.
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D.
Nostrand Avenue Line
The Nostrand Avenue Line is a New York City Subway route in Brooklyn that branches off the IRT Eastern Parkway Line to serve neighborhoods along Nostrand Avenue, terminating at Flatbush Avenue–Brooklyn College.
-
E.
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.
- 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: BMT 2 (Fourth Avenue Local) Target entity description: BMT 2 (Fourth Avenue Local) was a former Brooklyn–Manhattan Transit Corporation subway service that operated local trains along Brooklyn’s Fourth Avenue Line in New York City.
-
A.
BMT Nassau Street Line
The BMT Nassau Street Line is a New York City Subway line in Lower Manhattan that primarily carries J and Z trains through the Financial District.
-
B.
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.
-
C.
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.
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D.
Nostrand Avenue Line
The Nostrand Avenue Line is a New York City Subway route in Brooklyn that branches off the IRT Eastern Parkway Line to serve neighborhoods along Nostrand Avenue, terminating at Flatbush Avenue–Brooklyn College.
-
E.
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.
- F. None of above. chosen
Statements (27)
| Predicate | Object |
|---|---|
| instanceOf |
Brooklyn–Manhattan Transit Corporation service
ⓘ
former New York City Subway service ⓘ |
| city | New York City ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| division | BMT ⓘ |
| electrification | third rail ⓘ |
| fareSystem | New York City Subway ⓘ |
| historicalPeriod | early 20th century New York City transit ⓘ |
| namedAfter | Fourth Avenue Local ⓘ |
| network | Brooklyn–Manhattan Transit Corporation subway network ⓘ |
| operatedBy | Brooklyn–Manhattan Transit Corporation ⓘ |
| operatedOnLine | BMT Fourth Avenue Line ⓘ |
| publicTransportSystem | New York City Subway ⓘ |
| railGauge | standard gauge ⓘ |
| region | New York metropolitan area ⓘ |
| routeNumber | 2 ⓘ |
| servedBorough |
Brooklyn
ⓘ
Manhattan ⓘ |
| serviceArea |
Brooklyn
ⓘ
Lower Manhattan ⓘ |
| servicePattern | local ⓘ |
| serviceType | numbered route ⓘ |
| status | discontinued ⓘ |
| successorSystem | New York City Transit Authority ⓘ |
| trackUsage | local tracks on Fourth Avenue Line ⓘ |
| transportMode | rapid transit ⓘ |
| usedLine | Fourth Avenue Line ⓘ |
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: BMT 2 (Fourth Avenue Local) Description of subject: BMT 2 (Fourth Avenue Local) was a former Brooklyn–Manhattan Transit Corporation subway service that operated local trains along Brooklyn’s Fourth Avenue Line in New York City.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
RR (Broadway–Fourth Avenue Local)
this entity surface form:
BMT Broadway–Fourth Avenue Local