R11 series
E1042524
The R11 series was a small group of experimental New York City Subway prototype cars built in the late 1940s to test design features for future IND/BMT large-profile rolling stock.
All labels observed (1)
| Label | Occurrences |
|---|---|
| R11 series canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13457032 — 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: R11 series Context triple: [IND/BMT large-profile cars, hasCarTypeFamily, R11 series]
-
A.
R10 series
The R10 series was a class of New York City Subway rolling stock built in the late 1940s that introduced several modern design features and served primarily on IND lines for decades.
-
B.
R11
R11 is the internal station code used by the New York City Subway for the Grand Central–42nd Street complex in Midtown Manhattan.
-
C.
R11
R11 is a regional railway line in Catalonia, Spain, operating under the Rodalies de Catalunya network and connecting Barcelona with towns toward the French border via Girona and Figueres.
-
D.
R21 series
The R21 series is a class of New York City Subway rolling stock built for the IND/BMT divisions, featuring large-profile steel cars used in mid-20th-century service.
-
E.
R46 series
The R46 series is a class of New York City Subway rolling stock built in the 1970s for the IND/BMT divisions, known for its stainless-steel bodies and use on various lettered lines.
- 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: R11 series Target entity description: The R11 series was a small group of experimental New York City Subway prototype cars built in the late 1940s to test design features for future IND/BMT large-profile rolling stock.
-
A.
R10 series
The R10 series was a class of New York City Subway rolling stock built in the late 1940s that introduced several modern design features and served primarily on IND lines for decades.
-
B.
R11
R11 is the internal station code used by the New York City Subway for the Grand Central–42nd Street complex in Midtown Manhattan.
-
C.
R11
R11 is a regional railway line in Catalonia, Spain, operating under the Rodalies de Catalunya network and connecting Barcelona with towns toward the French border via Girona and Figueres.
-
D.
R21 series
The R21 series is a class of New York City Subway rolling stock built for the IND/BMT divisions, featuring large-profile steel cars used in mid-20th-century service.
-
E.
R46 series
The R46 series is a class of New York City Subway rolling stock built in the 1970s for the IND/BMT divisions, known for its stainless-steel bodies and use on various lettered lines.
- F. None of above. chosen
Statements (55)
| Predicate | Object |
|---|---|
| instanceOf |
New York City Subway rolling stock
ⓘ
experimental railcar series ⓘ prototype subway car ⓘ |
| alsoKnownAs |
R-11
NERFINISHED
ⓘ
R11 prototype ⓘ |
| bodyMaterial | stainless steel ⓘ |
| brakeSystem | SMEE NERFINISHED ⓘ |
| builtFor |
IND/BMT Division of the New York City Subway
NERFINISHED
ⓘ
Independent Subway System NERFINISHED ⓘ |
| carLength | 60 feet ⓘ |
| carNumbers |
8010
ⓘ
8011 ⓘ 8012 ⓘ 8013 ⓘ 8014 ⓘ 8015 ⓘ 8016 ⓘ 8017 ⓘ 8018 ⓘ 8019 ⓘ |
| carType | single unit ⓘ |
| carWidth | 10 feet ⓘ |
| city | New York City ⓘ |
| collectionMethod | contact shoe ⓘ |
| constructionPeriod | late 1940s ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| designInfluence | Budds stainless-steel construction techniques ⓘ |
| division | IND/BMT NERFINISHED ⓘ |
| doorConfiguration | four pairs of side doors per car ⓘ |
| enteredService | 1950 ⓘ |
| introducedFeature |
fluorescent lighting
ⓘ
forced-air ventilation system ⓘ padded seats ⓘ provisions for air conditioning ⓘ sealed beam headlights ⓘ stainless-steel carbody for IND/BMT stock ⓘ |
| lineTestedOn | IND Queens Boulevard Line NERFINISHED ⓘ |
| manufacturer | American Car and Foundry Company NERFINISHED ⓘ |
| numberBuilt | 10 ⓘ |
| numberPreserved | 1 ⓘ |
| operator | New York City Transit Authority NERFINISHED ⓘ |
| preservedAt | New York Transit Museum NERFINISHED ⓘ |
| preservedCarNumber | 8013 ⓘ |
| profileType | large-profile ⓘ |
| purpose | test design features for future IND/BMT large-profile rolling stock ⓘ |
| rebuilder |
American Car and Foundry Company
NERFINISHED
ⓘ
New York City Transit Authority NERFINISHED ⓘ |
| rebuiltAs | R34 ⓘ |
| rebuiltPeriod | 1960s ⓘ |
| serviceType | revenue service ⓘ |
| successorSeries | R32 ⓘ |
| system | New York City Subway ⓘ |
| tractionPower | 600 V DC third rail ⓘ |
| withdrawnFromService | 1970s ⓘ |
| yearConstructed | 1949 ⓘ |
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: R11 series Description of subject: The R11 series was a small group of experimental New York City Subway prototype cars built in the late 1940s to test design features for future IND/BMT large-profile rolling stock.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.