2 train
E10571
The 2 train is a New York City Subway service that runs as a numbered, typically express route on the IRT lines, connecting the Bronx, Manhattan, and Brooklyn.
All labels observed (2)
| Label | Occurrences |
|---|---|
| 2 train canonical | 24 |
| 2 train (all times) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T23940 — 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: 2 train Context triple: [New York City Subway, hasLine, 2 train]
-
A.
1 train
The 1 train is a New York City Subway service that runs along the Broadway–Seventh Avenue Line, providing local service between the Bronx and lower Manhattan.
-
B.
MARC Train
MARC Train is a commuter rail service operating in Maryland and the surrounding region, connecting cities such as Washington, D.C., Baltimore, and Martinsburg.
-
C.
AeroTrain
AeroTrain is an automated underground people mover system that transports passengers between terminals at Washington Dulles International Airport.
-
D.
Congressional Limited Express
The Congressional Limited Express was a premier Pennsylvania Railroad passenger train that provided fast, luxurious service between New York City and Washington, D.C.
-
E.
PRR
PRR is the abbreviation commonly used for the Pennsylvania Railroad Company, once one of the largest and most influential railroads in the United States.
- 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: 2 train Target entity description: The 2 train is a New York City Subway service that runs as a numbered, typically express route on the IRT lines, connecting the Bronx, Manhattan, and Brooklyn.
-
A.
1 train
The 1 train is a New York City Subway service that runs along the Broadway–Seventh Avenue Line, providing local service between the Bronx and lower Manhattan.
-
B.
MARC Train
MARC Train is a commuter rail service operating in Maryland and the surrounding region, connecting cities such as Washington, D.C., Baltimore, and Martinsburg.
-
C.
AeroTrain
AeroTrain is an automated underground people mover system that transports passengers between terminals at Washington Dulles International Airport.
-
D.
Congressional Limited Express
The Congressional Limited Express was a premier Pennsylvania Railroad passenger train that provided fast, luxurious service between New York City and Washington, D.C.
-
E.
PRR
PRR is the abbreviation commonly used for the Pennsylvania Railroad Company, once one of the largest and most influential railroads in the United States.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
New York City Subway service
ⓘ
rapid transit service ⓘ |
| boroughServed |
Brooklyn
ⓘ
Manhattan ⓘ The Bronx ⓘ |
| city | New York City ⓘ |
| connectsBoroughs |
Manhattan–Brooklyn
ⓘ
The Bronx ⓘ
surface form:
The Bronx–Manhattan
|
| country |
United States of America
ⓘ
surface form:
United States
|
| division | IRT ⓘ |
| fareControl | proof of payment via turnstiles ⓘ |
| fareMediumAccepted |
MetroCard
ⓘ
OMNY ⓘ |
| farePolicy | flat fare within system ⓘ |
| fareSystem |
OMNY
ⓘ
surface form:
MTA New York City Subway fare system
|
| hasAccessibilityFeatures | some stations ADA-accessible ⓘ |
| hasRouteSymbol | 2 in red circle ⓘ |
| interchangesWith |
MTA Regional Bus Operations at many stations
ⓘ
commuter rail at selected hubs ⓘ other New York City Subway services ⓘ |
| lineColor | red ⓘ |
| locale |
New York metropolitan area
ⓘ
surface form:
New York City metropolitan area
|
| maintenanceBy |
Metropolitan Transportation Authority
ⓘ
surface form:
New York City Transit Authority
|
| modeOfTransport | subway ⓘ |
| networkSection |
IRT A Division subway cars
ⓘ
surface form:
A Division (IRT) of the New York City Subway
|
| operatedBy |
Metropolitan Transportation Authority
ⓘ
surface form:
New York City Transit Authority
|
| operatorParentAgency | Metropolitan Transportation Authority ⓘ |
| owner |
New York City
ⓘ
surface form:
City of New York
|
| partOfNetwork | IRT Broadway–Seventh Avenue Line services ⓘ |
| powerSupply | third rail ⓘ |
| rollingStockGauge | standard gauge ⓘ |
| safetySystem |
automatic train stop (ATS) on some segments
ⓘ
wayside signals ⓘ |
| serviceArea | Bronx–Manhattan–Brooklyn corridor ⓘ |
| serviceClass | local and express ⓘ |
| serviceDesignationStyle | number in red circle ⓘ |
| servicePattern | primarily express ⓘ |
| serviceType | numbered route ⓘ |
| system | New York City Subway ⓘ |
| trackConfiguration | underground and elevated ⓘ |
| trunkLineInBronx |
White Plains Road Line
ⓘ
surface form:
IRT White Plains Road Line
|
| trunkLineInBrooklyn |
Eastern Parkway Line
ⓘ
surface form:
IRT Eastern Parkway Line
|
| trunkLineInManhattan |
Broadway–Seventh Avenue Line
ⓘ
surface form:
IRT Broadway–Seventh Avenue Line
|
| usesRollingStockType | A Division (IRT) rolling stock ⓘ |
| usesSignageStandard | MTA subway route signage ⓘ |
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: 2 train Description of subject: The 2 train is a New York City Subway service that runs as a numbered, typically express route on the IRT lines, connecting the Bronx, Manhattan, and Brooklyn.
Referenced by (25)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
2 train (all times)
subject surface form:
West Farms Square–East Tremont Avenue station