R46 subway cars
E79343
The R46 subway cars are a class of New York City Subway rolling stock built in the 1970s, known for their stainless-steel bodies and long service on various IND/BMT lines.
All labels observed (6)
| Label | Occurrences |
|---|---|
| R46 subway cars canonical | 5 |
| R46 subway car | 4 |
| IND/BMT large-profile subway cars | 1 |
| New York City Subway R46 cars | 1 |
| R46 car underframe assembly | 1 |
| R46 subway cars (historical) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T626967 — 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: R46 subway cars Context triple: [F train, usesRollingStock, R46 subway cars]
-
A.
R160 subway cars
The R160 subway cars are a class of modern New Technology Train rolling stock used on various New York City Subway lines, featuring electronic signage, automated announcements, and improved accessibility and reliability compared to older fleets.
-
B.
R179 subway cars
The R179 subway cars are a modern class of stainless-steel New York City Subway rolling stock built by Bombardier for the B Division lines, featuring updated technology and improved passenger amenities.
-
C.
IRT A Division subway cars
IRT A Division subway cars are the narrower, smaller-profile New York City Subway vehicles designed to operate on the numbered lines of the system.
-
D.
Mark VI monorail trains
Mark VI monorail trains are a fleet of streamlined, automated monorail vehicles introduced in the late 1980s that serve as the primary passenger trains for the Walt Disney World Resort’s elevated transit system.
-
E.
Superliner bi-level cars
Superliner bi-level cars are double-decker passenger railcars used by Amtrak on long-distance routes, designed to provide increased capacity and enhanced comfort for overnight and scenic train travel.
- 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: R46 subway cars Target entity description: The R46 subway cars are a class of New York City Subway rolling stock built in the 1970s, known for their stainless-steel bodies and long service on various IND/BMT lines.
-
A.
R160 subway cars
The R160 subway cars are a class of modern New Technology Train rolling stock used on various New York City Subway lines, featuring electronic signage, automated announcements, and improved accessibility and reliability compared to older fleets.
-
B.
R179 subway cars
The R179 subway cars are a modern class of stainless-steel New York City Subway rolling stock built by Bombardier for the B Division lines, featuring updated technology and improved passenger amenities.
-
C.
IRT A Division subway cars
IRT A Division subway cars are the narrower, smaller-profile New York City Subway vehicles designed to operate on the numbered lines of the system.
-
D.
Mark VI monorail trains
Mark VI monorail trains are a fleet of streamlined, automated monorail vehicles introduced in the late 1980s that serve as the primary passenger trains for the Walt Disney World Resort’s elevated transit system.
-
E.
Superliner bi-level cars
Superliner bi-level cars are double-decker passenger railcars used by Amtrak on long-distance routes, designed to provide increased capacity and enhanced comfort for overnight and scenic train travel.
- F. None of above. chosen
Statements (67)
| Predicate | Object |
|---|---|
| instanceOf |
New York City Subway rolling stock
ⓘ
electric multiple unit ⓘ stainless steel subway car ⓘ |
| airConditioning | yes ⓘ |
| bogieType | Rockwell trucks ⓘ |
| brakeType |
dynamic brake
ⓘ
pneumatic brake ⓘ |
| carbodyMaterial | stainless steel ⓘ |
| carHeight |
12.08 feet
ⓘ
3.68 meters ⓘ |
| carLength |
22.86 meters
ⓘ
75 feet ⓘ |
| carWidth |
10 feet
ⓘ
3.05 meters ⓘ |
| collectionMethod | contact shoe ⓘ |
| controlSystem | cam control ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| couplingType | Westinghouse H2C ⓘ |
| designedFor |
B Division
ⓘ
high-capacity service ⓘ |
| division | IND/BMT Division ⓘ |
| doorConfiguration | quarter-point doors ⓘ |
| doorsConfiguration | 4 pairs per side ⓘ |
| doorsPerSidePerCar | 8 ⓘ |
| doorType | sliding pocket doors ⓘ |
| enteredService |
1975
ⓘ
1976 ⓘ 1977 ⓘ 1978 ⓘ |
| family | B Division 75-foot cars ⓘ |
| fleetNumbers | 5482–6207 ⓘ |
| formation | 4-car set ⓘ |
| linesServed |
A
ⓘ
C ⓘ E ⓘ F ⓘ GG ⓘ
surface form:
G
N ⓘ Q ⓘ R ⓘ V ⓘ other IND/BMT services ⓘ |
| manufacturer |
Pullman-Standard
ⓘ
surface form:
Pullman Standard
Rockwell International ⓘ |
| nickname | R-46 ⓘ |
| notableIssue | truck frame cracks in early service ⓘ |
| numberBuilt | 754 ⓘ |
| operator | New York City Transit Authority ⓘ |
| ownership | Metropolitan Transportation Authority ⓘ |
| powerSupply | 600 V DC third rail ⓘ |
| precededBy | R44 subway cars ⓘ |
| rebuildPeriod |
1990–1992
ⓘ
early 1990s ⓘ |
| rebuiltBy | Morrison-Knudsen ⓘ |
| region | New York City ⓘ |
| safetyFeature | cab signaling equipment on some units ⓘ |
| seatingType | longitudinal seating ⓘ |
| serviceType |
express service
ⓘ
local service ⓘ |
| successorClass |
R160 subway cars
ⓘ
R179 subway cars ⓘ R211 subway cars ⓘ |
| system | New York City Subway ⓘ |
| trackGauge |
1,435 mm
ⓘ
standard gauge ⓘ |
| yearConstructionEnd | 1978 ⓘ |
| yearConstructionStart | 1975 ⓘ |
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: R46 subway cars Description of subject: The R46 subway cars are a class of New York City Subway rolling stock built in the 1970s, known for their stainless-steel bodies and long service on various IND/BMT lines.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
R46 subway car
this entity surface form:
R46 subway car
this entity surface form:
R46 subway cars (historical)
subject surface form:
R (New York City Subway service)
this entity surface form:
R46 subway car
this entity surface form:
IND/BMT large-profile subway cars
subject surface form:
F (New York City Subway service)
this entity surface form:
R46 subway car
this entity surface form:
New York City Subway R46 cars
this entity surface form:
R46 car underframe assembly