C train (IND Eighth Avenue Local)
E562986
The C train (IND Eighth Avenue Local) is a New York City Subway service that runs local along the Eighth Avenue Line in Manhattan and into Brooklyn.
All labels observed (3)
| Label | Occurrences |
|---|---|
| C Eighth Avenue Local | 1 |
| C train (IND Eighth Avenue Local) canonical | 1 |
| IND B Eighth Avenue Local | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6029439 — 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 train (IND Eighth Avenue Local) Context triple: [A train (IND Eighth Avenue Line), sharesTrackageWith, C train (IND Eighth Avenue Local)]
-
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.
N train
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.
-
C.
W train
The W train is a local service of the New York City Subway that runs primarily in Manhattan and Queens, connecting Astoria to Lower Manhattan via the Broadway Line.
-
D.
A train (IND Eighth Avenue Line)
The A train on the IND Eighth Avenue Line is a major New York City Subway service that runs express through Manhattan and Brooklyn, connecting northern Manhattan and the Rockaways.
-
E.
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.
- 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 train (IND Eighth Avenue Local) Target entity description: The C train (IND Eighth Avenue Local) is a New York City Subway service that runs local along the Eighth Avenue Line in Manhattan and into Brooklyn.
-
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.
N train
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.
-
C.
W train
The W train is a local service of the New York City Subway that runs primarily in Manhattan and Queens, connecting Astoria to Lower Manhattan via the Broadway Line.
-
D.
A train (IND Eighth Avenue Line)
The A train on the IND Eighth Avenue Line is a major New York City Subway service that runs express through Manhattan and Brooklyn, connecting northern Manhattan and the Rockaways.
-
E.
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.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
New York City Subway service
ⓘ
rapid transit service ⓘ |
| accessibilityPolicy | wheelchair access at selected stations ⓘ |
| boroughServed |
Brooklyn
ⓘ
Manhattan ⓘ |
| color | blue ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| division | IND Division ⓘ |
| electrification | 600 V DC third rail ⓘ |
| fareCollection | barrier-controlled turnstiles ⓘ |
| fareMedium |
MetroCard
NERFINISHED
ⓘ
OMNY NERFINISHED ⓘ |
| farePolicy | flat fare within system ⓘ |
| fareSystem | Metropolitan Transportation Authority fare system NERFINISHED ⓘ |
| governingBody | MTA Board NERFINISHED ⓘ |
| hasRouteDesignation | C in a blue circle ⓘ |
| lineUsed | IND Eighth Avenue Line NERFINISHED ⓘ |
| locale | New York City NERFINISHED ⓘ |
| managedBy | Metropolitan Transportation Authority NERFINISHED ⓘ |
| modeOfTransport | rail ⓘ |
| network | IND Eighth Avenue Line trunk services NERFINISHED ⓘ |
| operator |
Metropolitan Transportation Authority
ⓘ
New York City Transit Authority NERFINISHED ⓘ |
| owner |
New York City
ⓘ
surface form:
City of New York
|
| partOf | IND Eighth Avenue services NERFINISHED ⓘ |
| poweredBy | electricity ⓘ |
| publicTransportType | metro ⓘ |
| region | Northeastern United States ⓘ |
| rollingStockType | subway cars ⓘ |
| safetySystem |
automatic train stop
ⓘ
wayside signals ⓘ |
| serviceArea |
Brooklyn neighborhoods along Fulton Street Line
ⓘ
Eighth Avenue corridor in Manhattan ⓘ |
| serviceClass | lettered service ⓘ |
| serviceLetter | C ⓘ |
| serviceLevel |
local in Brooklyn
ⓘ
local in Manhattan ⓘ |
| servicePattern | local ⓘ |
| serviceType | local service ⓘ |
| system | New York City Subway ⓘ |
| ticketingSystem | proof-of-payment not used ⓘ |
| timeZone | Eastern Time Zone ⓘ |
| trackGauge | standard gauge ⓘ |
| trunkColorRepresents | Eighth Avenue Line NERFINISHED ⓘ |
| usesInfrastructure |
elevated structures
ⓘ
underground tunnels ⓘ |
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 train (IND Eighth Avenue Local) Description of subject: The C train (IND Eighth Avenue Local) is a New York City Subway service that runs local along the Eighth Avenue Line in Manhattan and into Brooklyn.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
IND B Eighth Avenue Local
this entity surface form:
C Eighth Avenue Local