N train
E18396
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.
All labels observed (3)
| Label | Occurrences |
|---|---|
| N train canonical | 34 |
| N (BMT Broadway Line) | 1 |
| N (Broadway Express) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T23957 — 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: N train Context triple: [New York City Subway, hasLine, N train]
-
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.
M train
The M train is a New York City Subway service that runs through parts of Queens, Brooklyn, and Manhattan, connecting neighborhoods such as Middle Village and Forest Hills with Midtown and Lower Manhattan.
-
C.
G train
The G train is a New York City Subway service that runs entirely within Brooklyn and Queens, notably bypassing Manhattan.
-
D.
E train
The E train is a New York City Subway service that runs primarily along the IND Eighth Avenue Line, providing rapid transit between Queens and Manhattan.
-
E.
F train
The F train is a New York City Subway service that runs primarily along the IND Sixth Avenue Line in Manhattan, connecting neighborhoods in Queens, Manhattan, and Brooklyn.
- 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: N train Target entity description: 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.
-
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.
M train
The M train is a New York City Subway service that runs through parts of Queens, Brooklyn, and Manhattan, connecting neighborhoods such as Middle Village and Forest Hills with Midtown and Lower Manhattan.
-
C.
G train
The G train is a New York City Subway service that runs entirely within Brooklyn and Queens, notably bypassing Manhattan.
-
D.
E train
The E train is a New York City Subway service that runs primarily along the IND Eighth Avenue Line, providing rapid transit between Queens and Manhattan.
-
E.
F train
The F train is a New York City Subway service that runs primarily along the IND Sixth Avenue Line in Manhattan, connecting neighborhoods in Queens, Manhattan, and Brooklyn.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
New York City Subway service
ⓘ
rapid transit service ⓘ |
| boroughServed |
Brooklyn
ⓘ
Manhattan ⓘ |
| color | yellow ⓘ |
| connectsBorough |
Manhattan and Brooklyn via Manhattan Bridge
ⓘ
Queens and Manhattan via Queensboro Plaza connection ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| division | BMT Division ⓘ |
| electrification | 600 V DC third rail ⓘ |
| fareMedium |
MetroCard
ⓘ
OMNY ⓘ |
| fareSystem | Metropolitan Transportation Authority fare system ⓘ |
| hasServicePatternChange | late night local service in Manhattan and Brooklyn ⓘ |
| historicalDivision |
Brooklyn–Manhattan Transit Corporation
ⓘ
linked to:
Brooklyn Rapid Transit Company
|
| lineColorFamily |
BMT Broadway services
ⓘ
linked to:
BMT Broadway Line
|
| locale | New York City ⓘ |
| operator |
New York City Transit Authority
ⓘ
linked to:
Metropolitan Transportation Authority
|
| owner | Metropolitan Transportation Authority ⓘ |
| primaryManhattanTrunkLine | BMT Broadway Line ⓘ |
| rollingStockType | B Division subway cars ⓘ |
| routeLetter | N ⓘ |
| routeSymbolColor | yellow ⓘ |
| routeSymbolShape | circle ⓘ |
| servesBorough | Queens ⓘ |
| servesTerminal |
Astoria–Ditmars Boulevard
ⓘ
Coney Island–Stillwell Avenue ⓘ |
| serviceArea |
Astoria
ⓘ
linked to:
Astoria Landing
Coney Island ⓘ Downtown Brooklyn ⓘ Midtown Manhattan ⓘ |
| serviceClass |
lettered route
ⓘ
trunk route on Broadway Line ⓘ |
| serviceFrequency | more frequent on weekdays than late nights ⓘ |
| serviceIntroducedBy |
Brooklyn–Manhattan Transit Corporation
ⓘ
linked to:
Brooklyn Rapid Transit Company
|
| servicePattern |
express in Brooklyn Fourth Avenue Line (rush hours, peak direction)
ⓘ
express in Manhattan ⓘ local and express ⓘ local in Brooklyn Fourth Avenue Line (off-peak) ⓘ local in Queens ⓘ |
| serviceType | 24-hour service ⓘ |
| system | New York City Subway ⓘ |
| trackGauge | standard gauge ⓘ |
| usesInfrastructure | Manhattan Bridge ⓘ |
| usesLine |
BMT Broadway Line
ⓘ
BMT Sea Beach Line ⓘ 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: N train Description of subject: 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.
Referenced by (36)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: N train
subject linked to:
Broadway Line in Manhattan
subject linked to:
Astoria Line in Queens
subject linked to:
Astoria–Ditmars Boulevard (historical and/or alternate terminal)
subject linked to:
Montague Street Tunnel (historical patterns)