New York City Subway lettered services
E706723
New York City Subway lettered services are the group of rapid transit routes identified by letters that primarily run on the system’s B Division lines across Manhattan, Brooklyn, Queens, and the Bronx.
All labels observed (1)
| Label | Occurrences |
|---|---|
| New York City Subway lettered services canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T8041539 — 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: New York City Subway lettered services Context triple: [M (New York City Subway service), partOf, New York City Subway lettered services]
-
A.
S (New York City Subway service)
The S (New York City Subway service) is a designation used for the system’s shuttle trains, which provide short, point-to-point connections between specific stations.
-
B.
R (New York City Subway service)
The R (New York City Subway service) is a local rapid transit line in New York City that runs primarily along the BMT Broadway Line in Manhattan and the BMT Fourth Avenue Line in Brooklyn, connecting Queens, Manhattan, and Brooklyn.
-
C.
A (New York City Subway service)
The A (New York City Subway service) is a major rapid transit line in New York City that runs primarily along the Eighth Avenue Corridor in Manhattan and extends into Brooklyn and Queens, including service to JFK Airport and the Rockaways.
-
D.
Z (New York City Subway service)
The Z is a rush-hour, skip-stop New York City Subway service that runs along the J line in Brooklyn and Queens into Manhattan.
-
E.
G (New York City Subway service)
The G is a New York City Subway service that runs entirely within Brooklyn and Queens, connecting neighborhoods without entering 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: New York City Subway lettered services Target entity description: New York City Subway lettered services are the group of rapid transit routes identified by letters that primarily run on the system’s B Division lines across Manhattan, Brooklyn, Queens, and the Bronx.
-
A.
S (New York City Subway service)
The S (New York City Subway service) is a designation used for the system’s shuttle trains, which provide short, point-to-point connections between specific stations.
-
B.
R (New York City Subway service)
The R (New York City Subway service) is a local rapid transit line in New York City that runs primarily along the BMT Broadway Line in Manhattan and the BMT Fourth Avenue Line in Brooklyn, connecting Queens, Manhattan, and Brooklyn.
-
C.
A (New York City Subway service)
The A (New York City Subway service) is a major rapid transit line in New York City that runs primarily along the Eighth Avenue Corridor in Manhattan and extends into Brooklyn and Queens, including service to JFK Airport and the Rockaways.
-
D.
Z (New York City Subway service)
The Z is a rush-hour, skip-stop New York City Subway service that runs along the J line in Brooklyn and Queens into Manhattan.
-
E.
G (New York City Subway service)
The G is a New York City Subway service that runs entirely within Brooklyn and Queens, connecting neighborhoods without entering Manhattan.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
public transport service
ⓘ
rapid transit service group ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| excludesService |
1
ⓘ
2 ⓘ 3 ⓘ 4 ⓘ 5 ⓘ 6 ⓘ 7 ⓘ S NERFINISHED ⓘ |
| fareControl | free transfers between lettered services ⓘ |
| fareMedium |
MetroCard
NERFINISHED
ⓘ
OMNY NERFINISHED ⓘ |
| fareSystem | Metropolitan Transportation Authority fare system ⓘ |
| gauge | standard gauge ⓘ |
| hasService |
A
NERFINISHED
ⓘ
B NERFINISHED ⓘ C ⓘ D NERFINISHED ⓘ E NERFINISHED ⓘ F NERFINISHED ⓘ G ⓘ J NERFINISHED ⓘ L NERFINISHED ⓘ M NERFINISHED ⓘ N ⓘ Q NERFINISHED ⓘ R NERFINISHED ⓘ W NERFINISHED ⓘ Z NERFINISHED ⓘ |
| historicalOrigin |
BMT Division
NERFINISHED
ⓘ
IND Division NERFINISHED ⓘ |
| includesCBTCSegments | Yes ⓘ |
| mergedInto | unified B Division after 1940s unification ⓘ |
| operatedBy |
Metropolitan Transportation Authority
ⓘ
New York City Transit Authority NERFINISHED ⓘ |
| partOf | New York City Subway ⓘ |
| primaryLocale | New York City NERFINISHED ⓘ |
| servesBorough |
Brooklyn
NERFINISHED
ⓘ
Manhattan NERFINISHED ⓘ Queens NERFINISHED ⓘ The Bronx NERFINISHED ⓘ |
| signalSystem | wayside block signals ⓘ |
| trackConfiguration | mostly quadruple-track trunk lines in Manhattan ⓘ |
| typicalCarLength |
60-foot cars
ⓘ
75-foot cars ⓘ |
| usesDivision | B Division NERFINISHED ⓘ |
| usesLetterDesignation | Latin alphabet capital letters ⓘ |
| usesPowerSupply | 600 V DC third rail ⓘ |
| usesRollingStock | B Division rolling stock NERFINISHED ⓘ |
| usesTrainWidth | 10-foot-wide 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: New York City Subway lettered services Description of subject: New York City Subway lettered services are the group of rapid transit routes identified by letters that primarily run on the system’s B Division lines across Manhattan, Brooklyn, Queens, and the Bronx.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.