K train
E481014
The K train was a former New York City Subway service designation that operated on parts of the Brooklyn–Manhattan Transit (BMT) system before being discontinued.
All labels observed (1)
| Label | Occurrences |
|---|---|
| K train canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4935513 — 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: K train Context triple: [BMT Myrtle Avenue Line, formerService, K train]
-
A.
J train
The J train is a New York City Subway service that runs along the BMT Jamaica Line, connecting Jamaica, Queens with Lower Manhattan via Brooklyn.
-
B.
G train
The G train is a New York City Subway service that runs entirely within Brooklyn and Queens, notably bypassing Manhattan.
-
C.
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.
-
D.
Q train
The Q train is a New York City Subway service that runs along the BMT Broadway Line in Manhattan and the Brighton Line in Brooklyn, connecting neighborhoods like Astoria, Midtown, and Coney Island.
-
E.
Z train
The Z train is a New York City Subway rush-hour, skip-stop service that runs along the J line in Brooklyn and Queens, providing limited-stop service between Jamaica Center and lower Manhattan.
- 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: K train Target entity description: The K train was a former New York City Subway service designation that operated on parts of the Brooklyn–Manhattan Transit (BMT) system before being discontinued.
-
A.
J train
The J train is a New York City Subway service that runs along the BMT Jamaica Line, connecting Jamaica, Queens with Lower Manhattan via Brooklyn.
-
B.
G train
The G train is a New York City Subway service that runs entirely within Brooklyn and Queens, notably bypassing Manhattan.
-
C.
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.
-
D.
Q train
The Q train is a New York City Subway service that runs along the BMT Broadway Line in Manhattan and the Brighton Line in Brooklyn, connecting neighborhoods like Astoria, Midtown, and Coney Island.
-
E.
Z train
The Z train is a New York City Subway rush-hour, skip-stop service that runs along the J line in Brooklyn and Queens, providing limited-stop service between Jamaica Center and lower Manhattan.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
New York City Subway service
ⓘ
defunct public transit service ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | third rail 600 V DC ⓘ |
| fareCollection | turnstile-based entry ⓘ |
| fareSystem | Metropolitan Transportation Authority fare system ⓘ |
| locatedInState | New York NERFINISHED ⓘ |
| modeOfTransport | rail ⓘ |
| operatedBy | New York City Transit Authority NERFINISHED ⓘ |
| operatedInBorough |
Brooklyn
NERFINISHED
ⓘ
Manhattan NERFINISHED ⓘ |
| operatedInCity | New York City NERFINISHED ⓘ |
| operatedInEra | 20th century ⓘ |
| operatedOnDivision | BMT Division NERFINISHED ⓘ |
| operatedOnInfrastructure | BMT lines NERFINISHED ⓘ |
| operatedOnNetwork | New York City Subway NERFINISHED ⓘ |
| operatedOnSystem | Brooklyn–Manhattan Transit Corporation NERFINISHED ⓘ |
| ownerDuringOperation | City of New York NERFINISHED ⓘ |
| partOf | New York City Subway services history ⓘ |
| routeDesignationSystem | lettered subway services of NYC Subway ⓘ |
| serviceDesignation | K ⓘ |
| servicePattern |
lettered route
ⓘ
local service ⓘ |
| serviceStatus |
defunct
ⓘ
discontinued ⓘ |
| serviceType | rapid transit ⓘ |
| successor | other lettered BMT services ⓘ |
| trackGauge | standard gauge ⓘ |
| usedRollingStockType | BMT subway cars ⓘ |
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: K train Description of subject: The K train was a former New York City Subway service designation that operated on parts of the Brooklyn–Manhattan Transit (BMT) system before being discontinued.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.