R44 subway cars (historical)
E146145
The R44 subway cars (historical) were a class of New York City Transit rapid transit cars, some of which were adapted for use on the Staten Island Railway before their retirement.
All labels observed (1)
| Label | Occurrences |
|---|---|
| R44 subway cars (historical) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1280481 — 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: R44 subway cars (historical) Context triple: [Staten Island Railway, rollingStock, R44 subway cars (historical)]
-
A.
R46 subway cars
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.
-
B.
R143 subway cars
The R143 subway cars are a class of New York City Subway rolling stock built in the early 2000s, primarily used on the BMT Canarsie Line and known for introducing modern features like electronic signage and automated announcements.
-
C.
R68 subway car
The R68 subway car is a stainless-steel New York City Subway rolling stock class built in the 1980s, primarily used on B Division lines such as the B train.
-
D.
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.
-
E.
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.
- 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: R44 subway cars (historical) Target entity description: The R44 subway cars (historical) were a class of New York City Transit rapid transit cars, some of which were adapted for use on the Staten Island Railway before their retirement.
-
A.
R46 subway cars
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.
-
B.
R143 subway cars
The R143 subway cars are a class of New York City Subway rolling stock built in the early 2000s, primarily used on the BMT Canarsie Line and known for introducing modern features like electronic signage and automated announcements.
-
C.
R68 subway car
The R68 subway car is a stainless-steel New York City Subway rolling stock class built in the 1980s, primarily used on B Division lines such as the B train.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (57)
| Predicate | Object |
|---|---|
| instanceOf |
New York City Subway rolling stock
ⓘ
rapid transit car class ⓘ |
| brakeSystem | Westinghouse Air Brake Company braking system ⓘ |
| builderSerialRange |
St. Louis Car Company
ⓘ
surface form:
St. Louis Car Company lots 1839–1840
|
| builtFor |
New York City Subway
ⓘ
Staten Island Railway ⓘ
surface form:
Staten Island Rapid Transit Railway
|
| carbodyMaterial | stainless steel ⓘ |
| carHeight | 12.08 feet ⓘ |
| carLength | 75 feet ⓘ |
| carWidth | 10 feet ⓘ |
| designedFor | higher-speed operation ⓘ |
| doorConfiguration | 8 sets of 50-inch wide side doors per car ⓘ |
| enteredService |
1971
ⓘ
1972 ⓘ |
| family | SMEE cars ⓘ |
| fleetNumbersNYCT | 100–399 ⓘ |
| fleetNumbersSIR | 388–399 ⓘ |
| formation |
4-car sets
ⓘ
married pairs (Staten Island Railway) ⓘ |
| introducedOnLine |
Eighth Avenue Line
ⓘ
surface form:
IND Eighth Avenue Line
Staten Island Railway ⓘ
surface form:
Staten Island Rapid Transit main line
|
| manufacturer | St. Louis Car Company ⓘ |
| maximumDesignSpeed | 80 mph ⓘ |
| notableFeature |
first 75-foot-long cars in New York City Subway
ⓘ
originally equipped with air conditioning ⓘ originally equipped with automatic train operation equipment on some cars ⓘ originally equipped with carpeting and bucket seats ⓘ |
| numberBuilt | 352 ⓘ |
| numberBuiltForNYCT | 300 ⓘ |
| numberBuiltForSIR | 52 ⓘ |
| NYCTFinalRetirement | 2010 ⓘ |
| NYCTRetirementBegan | 2009 ⓘ |
| operator |
New York City Transit Authority
ⓘ
Staten Island Railway ⓘ |
| postRetirementUse |
reefing as artificial reefs in the Atlantic Ocean
ⓘ
work service cars (limited number) ⓘ |
| powerCollectionMethod | third rail ⓘ |
| preservedUnit | at least one car preserved for museum or training use ⓘ |
| reasonForNYCTRetirement | structural issues and age ⓘ |
| refurbishedBy | Morrison-Knudsen ⓘ |
| refurbishmentLocation |
Hornell, New York, United States
ⓘ
surface form:
Hornell, New York
|
| refurbishmentPeriod | early 1990s ⓘ |
| refurbishmentScope | interior modernization and mechanical overhaul ⓘ |
| serviceTopSpeed | 50–55 mph ⓘ |
| SIRFinalRetirement | 2019 ⓘ |
| successorClassOnNYCT | R160 subway cars ⓘ |
| successorClassOnSIR |
R211 subway cars
ⓘ
surface form:
R211S subway cars
|
| thirdRailVoltage | 600 V DC ⓘ |
| trackGauge | 4 ft 8 1⁄2 in standard gauge ⓘ |
| tractionMotors | DC traction motors ⓘ |
| usedOnLine |
A
ⓘ
C ⓘ E ⓘ F ⓘ N ⓘ R ⓘ Staten Island Railway ⓘ
surface form:
Staten Island Railway main line
|
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: R44 subway cars (historical) Description of subject: The R44 subway cars (historical) were a class of New York City Transit rapid transit cars, some of which were adapted for use on the Staten Island Railway before their retirement.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.