T1 subway train
E46849
The T1 subway train is a model of rapid transit vehicle used by the Toronto Transit Commission, primarily operating on the city’s Bloor–Danforth subway line.
All labels observed (2)
| Label | Occurrences |
|---|---|
| T1 subway train canonical | 1 |
| T1 subway trains | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T369670 — 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: T1 subway train Context triple: [Line 2 Bloor–Danforth, hasRollingStock, T1 subway train]
-
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.
G train
The G train is a New York City Subway service that runs entirely within Brooklyn and Queens, notably bypassing Manhattan.
-
C.
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.
-
D.
J train
The J train is a New York City Subway service that runs along the BMT Jamaica Line, connecting Jamaica, Queens with Lower Manhattan via Brooklyn.
-
E.
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.
- 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: T1 subway train Target entity description: The T1 subway train is a model of rapid transit vehicle used by the Toronto Transit Commission, primarily operating on the city’s Bloor–Danforth subway line.
-
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.
G train
The G train is a New York City Subway service that runs entirely within Brooklyn and Queens, notably bypassing Manhattan.
-
C.
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.
-
D.
J train
The J train is a New York City Subway service that runs along the BMT Jamaica Line, connecting Jamaica, Queens with Lower Manhattan via Brooklyn.
-
E.
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.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
rapid transit vehicle
ⓘ
subway car ⓘ |
| accessibilityFeature |
audible stop announcements
ⓘ
designated wheelchair areas ⓘ visual destination signs ⓘ |
| alsoUsedOnLine |
Line 1 Yonge–University
ⓘ
surface form:
Yonge–University line (historically)
|
| brakeType |
dynamic brakes
ⓘ
electro-pneumatic brakes ⓘ |
| builtFor | Toronto Transit Commission ⓘ |
| cabLocation | end cars ⓘ |
| carbodyMaterial | stainless steel ⓘ |
| carHeight | 3.7 m ⓘ |
| carLength | 23.2 m ⓘ |
| carWidth | 3.12 m ⓘ |
| city | Toronto ⓘ |
| collectionMethod | contact shoe ⓘ |
| constructionPeriodEnd | 2001 ⓘ |
| constructionPeriodStart | 1995 ⓘ |
| controlSystem | chopper control ⓘ |
| country | Canada ⓘ |
| couplingType |
automatic couplers between trainsets
ⓘ
semi-permanent couplers within trainset ⓘ |
| designedFor |
Line 2 Bloor–Danforth
ⓘ
surface form:
Bloor–Danforth line
|
| doorConfiguration | double-leaf side doors ⓘ |
| doorControl | cab-operated doors ⓘ |
| doorsPerSide | 4 ⓘ |
| doorType | sliding pocket doors ⓘ |
| electricSystemVoltage | 600 V DC ⓘ |
| electrificationSystem | third rail ⓘ |
| fleetOwner | Toronto Transit Commission ⓘ |
| floorType | high-floor ⓘ |
| formation | 6-car trainset ⓘ |
| interiorLayout | longitudinal seating ⓘ |
| manufacturer |
Bombardier
ⓘ
surface form:
Bombardier Transportation
Bombardier ⓘ
surface form:
Bombardier Transportation Canada Inc.
|
| network |
Toronto subway
ⓘ
surface form:
TTC subway system
|
| operatesOnLine |
Line 2 Bloor–Danforth
ⓘ
surface form:
Bloor–Danforth line
|
| operatesOnSystem | Toronto subway ⓘ |
| operator | Toronto Transit Commission ⓘ |
| powerOutput | electric traction motors ⓘ |
| primaryUse | urban passenger transport ⓘ |
| safetySystem | automatic train control compatible (on equipped lines) ⓘ |
| serviceEntryYear | 1995 ⓘ |
| serviceType | heavy metro ⓘ |
| successorModel | Toronto Rocket ⓘ |
| trackGauge | 1495 mm ⓘ |
| trackGaugeType | Toronto gauge ⓘ |
| usedBy | Toronto Transit Commission passengers ⓘ |
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: T1 subway train Description of subject: The T1 subway train is a model of rapid transit vehicle used by the Toronto Transit Commission, primarily operating on the city’s Bloor–Danforth subway line.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
T1 subway trains