R1–R9 series
E1041241
The R1–R9 series were early New York City Subway rolling stock built in the 1930s that formed the backbone of the IND division’s original fleet.
All labels observed (1)
| Label | Occurrences |
|---|---|
| R1–R9 series canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13457030 — 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: R1–R9 series Context triple: [IND/BMT large-profile cars, hasCarTypeFamily, R1–R9 series]
-
A.
Eseries
Eseries is Nokia's line of business-oriented smartphones designed with features like robust email support, security, and productivity tools for professional users.
-
B.
Série 4000
Série 4000 is a class of high-speed electric multiple unit trains used by Comboios de Portugal for its Alfa Pendular premium intercity services.
-
C.
LC series
The LC series is a line of low-cost, education-focused Macintosh desktop computers produced by Apple in the early 1990s.
-
D.
E7 series
The E7 series is a high-speed Shinkansen train type operated by JR East and JR West in Japan, known for its comfort-focused design and use on routes such as the Hokuriku Shinkansen.
-
E.
R-9
R-9 is a Soviet-era intercontinental ballistic missile developed during the Cold War for long-range nuclear delivery.
- 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: R1–R9 series Target entity description: The R1–R9 series were early New York City Subway rolling stock built in the 1930s that formed the backbone of the IND division’s original fleet.
-
A.
Eseries
Eseries is Nokia's line of business-oriented smartphones designed with features like robust email support, security, and productivity tools for professional users.
-
B.
Série 4000
Série 4000 is a class of high-speed electric multiple unit trains used by Comboios de Portugal for its Alfa Pendular premium intercity services.
-
C.
LC series
The LC series is a line of low-cost, education-focused Macintosh desktop computers produced by Apple in the early 1990s.
-
D.
E7 series
The E7 series is a high-speed Shinkansen train type operated by JR East and JR West in Japan, known for its comfort-focused design and use on routes such as the Hokuriku Shinkansen.
-
E.
R-9
R-9 is a Soviet-era intercontinental ballistic missile developed during the Cold War for long-range nuclear delivery.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
New York City Subway rolling stock series
ⓘ
electric multiple unit ⓘ |
| brakeType | pneumatic brakes ⓘ |
| carbodyMaterial | steel ⓘ |
| collectionOf |
R1 subway cars
ⓘ
R4 subway cars NERFINISHED ⓘ R6 subway cars NERFINISHED ⓘ R7 subway cars NERFINISHED ⓘ R7A subway cars ⓘ R9 subway cars ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| doorType | sliding doors ⓘ |
| electricSystem | 600 V DC third rail ⓘ |
| followedBy | R10 subway cars NERFINISHED ⓘ |
| formedBackboneOf | original IND fleet ⓘ |
| gauge | standard gauge ⓘ |
| heritageUnitsPreserved |
New York Transit Museum
NERFINISHED
ⓘ
Railroad Museum of Long Island NERFINISHED ⓘ various museum railways ⓘ |
| inServiceFrom |
1930
ⓘ
1931 ⓘ |
| inServiceUntil |
1970s
ⓘ
1977 ⓘ |
| introduced | 1930s ⓘ |
| locationOfOperation | New York City NERFINISHED ⓘ |
| manufacturer |
American Car and Foundry Company
NERFINISHED
ⓘ
Pressed Steel Car Company NERFINISHED ⓘ Pullman Company NERFINISHED ⓘ |
| network | New York City Subway NERFINISHED ⓘ |
| operator |
New York City Board of Transportation
NERFINISHED
ⓘ
New York City Transit Authority NERFINISHED ⓘ |
| partOf |
IND Division
NERFINISHED
ⓘ
Independent Subway System NERFINISHED ⓘ |
| powerCollectionMethod | contact shoe ⓘ |
| precededBy | BMT steel subway cars ⓘ |
| railwayLineUsedOn |
BMT lines
NERFINISHED
ⓘ
IND Concourse Line NERFINISHED ⓘ IND Crosstown Line NERFINISHED ⓘ IND Culver Line NERFINISHED ⓘ IND Eighth Avenue Line NERFINISHED ⓘ IND Fulton Street Line NERFINISHED ⓘ IND Queens Boulevard Line NERFINISHED ⓘ IND Rockaway Line NERFINISHED ⓘ IND Sixth Avenue Line NERFINISHED ⓘ Southern Division BMT lines NERFINISHED ⓘ |
| trackGauge | 1,435 mm ⓘ |
| usedFor | passenger transportation ⓘ |
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: R1–R9 series Description of subject: The R1–R9 series were early New York City Subway rolling stock built in the 1930s that formed the backbone of the IND division’s original fleet.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.