C Line
E561869
The C Line is a local New York City Subway service that runs along the Eighth Avenue Line in Manhattan and through parts of Brooklyn and Queens.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T6017758 — 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: C Line Context triple: [Brooklyn, isServedBySubwayLine, C Line]
-
A.
C Line
The C Line is a light rail route in the Los Angeles Metro Rail system that runs primarily along the I-105 freeway corridor, connecting coastal and inland communities in the South Bay region.
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B.
C line
The C line is a route within Copenhagen’s S-train suburban rail network, providing frequent commuter service between central Copenhagen and its outlying districts.
-
C.
Line C
Line C is one of the routes of the Strasbourg tramway network, providing urban light-rail transit service within the city and its suburbs.
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D.
Line C
Line C is one of the main lines of the Prague Metro, running in a north–south direction and serving as a key backbone of the city’s rapid transit network.
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E.
Line C
Line C is one of the main lines of the Buenos Aires Underground, running north–south through central Buenos Aires and connecting key transport hubs in the city.
- 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: C Line Target entity description: The C Line is a local New York City Subway service that runs along the Eighth Avenue Line in Manhattan and through parts of Brooklyn and Queens.
-
A.
C Line
The C Line is a light rail route in the Los Angeles Metro Rail system that runs primarily along the I-105 freeway corridor, connecting coastal and inland communities in the South Bay region.
-
B.
C line
The C line is a route within Copenhagen’s S-train suburban rail network, providing frequent commuter service between central Copenhagen and its outlying districts.
-
C.
Line C
Line C is one of the main lines of the Buenos Aires Underground, running north–south through central Buenos Aires and connecting key transport hubs in the city.
-
D.
Line C
Line C is one of the routes of the Strasbourg tramway network, providing urban light-rail transit service within the city and its suburbs.
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E.
Line C
Line C is one of the main lines of the Prague Metro, running in a north–south direction and serving as a key backbone of the city’s rapid transit network.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
New York City Subway service
ⓘ
rapid transit service ⓘ |
| boroughServed |
Brooklyn
ⓘ
Manhattan ⓘ Queens NERFINISHED ⓘ |
| city | New York City ⓘ |
| color | blue ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| division | IND Division ⓘ |
| farePaymentMethod |
MetroCard
NERFINISHED
ⓘ
OMNY NERFINISHED ⓘ |
| fareSystem | MTA New York City Subway fare system ⓘ |
| gauge | standard gauge ⓘ |
| hasRouteColorFamily | Eighth Avenue Line services NERFINISHED ⓘ |
| modeOfTransport | subway ⓘ |
| operator | New York City Transit Authority NERFINISHED ⓘ |
| parentAgency | Metropolitan Transportation Authority NERFINISHED ⓘ |
| poweredBy | third rail electrification ⓘ |
| primaryBorough | Manhattan NERFINISHED ⓘ |
| publicTransportType | urban rail ⓘ |
| serviceArea |
Eighth Avenue corridor in Manhattan
NERFINISHED
ⓘ
central Brooklyn NERFINISHED ⓘ parts of Queens ⓘ |
| serviceLetter | C ⓘ |
| servicePattern | local ⓘ |
| serviceType | local service ⓘ |
| system | New York City Subway ⓘ |
| trackConfiguration | mostly four-track trunk with local tracks ⓘ |
| trunkLine | IND Eighth Avenue Line NERFINISHED ⓘ |
| usesRollingStockFrom | IND/BMT car fleet NERFINISHED ⓘ |
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: C Line Description of subject: The C Line is a local New York City Subway service that runs along the Eighth Avenue Line in Manhattan and through parts of Brooklyn and Queens.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Brooklyn
this entity surface form:
C line