Toronto gauge
E239029
Toronto gauge is a slightly wider-than-standard track gauge used by Toronto’s streetcars and older subway lines to maintain compatibility across the city’s legacy transit network.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Toronto gauge canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2163351 — 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: Toronto gauge Context triple: [Line 2 Bloor–Danforth, gauge, Toronto gauge]
-
A.
Toronto Civic Railways
Toronto Civic Railways was a municipally owned streetcar system that operated in Toronto in the early 20th century before being absorbed into the unified public transit network.
-
B.
Toronto subway
The Toronto subway is the primary rapid transit system in Toronto, Ontario, consisting of multiple underground and elevated lines that serve as the backbone of the city’s public transportation network.
-
C.
Calgary CTrain
Calgary CTrain is the light rail transit system serving Calgary, Alberta, known for its extensive network and high ridership within the city's public transportation system.
-
D.
Trillium Line
The Trillium Line is a diesel light rail transit line in Ottawa, Ontario, forming part of the city’s O-Train network and connecting southern communities with the downtown area.
-
E.
Waterloo–Reading line
The Waterloo–Reading line is a suburban and regional railway route in southern England that connects London Waterloo with Reading, serving numerous commuter towns in Surrey and Berkshire.
- 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: Toronto gauge Target entity description: Toronto gauge is a slightly wider-than-standard track gauge used by Toronto’s streetcars and older subway lines to maintain compatibility across the city’s legacy transit network.
-
A.
Toronto Civic Railways
Toronto Civic Railways was a municipally owned streetcar system that operated in Toronto in the early 20th century before being absorbed into the unified public transit network.
-
B.
Toronto subway
The Toronto subway is the primary rapid transit system in Toronto, Ontario, consisting of multiple underground and elevated lines that serve as the backbone of the city’s public transportation network.
-
C.
Calgary CTrain
Calgary CTrain is the light rail transit system serving Calgary, Alberta, known for its extensive network and high ridership within the city's public transportation system.
-
D.
Trillium Line
The Trillium Line is a diesel light rail transit line in Ottawa, Ontario, forming part of the city’s O-Train network and connecting southern communities with the downtown area.
-
E.
Waterloo–Reading line
The Waterloo–Reading line is a suburban and regional railway route in southern England that connects London Waterloo with Reading, serving numerous commuter towns in Surrey and Berkshire.
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf | railway track gauge ⓘ |
| affectsInteroperabilityWith | mainline North American rail network ⓘ |
| alsoKnownAs | TTC gauge ⓘ |
| cityServed |
Toronto
ⓘ
surface form:
City of Toronto
|
| country | Canada ⓘ |
| designedFor | compatibility between Toronto streetcars and legacy subway lines ⓘ |
| differenceFromStandardGauge | 60 mm wider ⓘ |
| gaugeCategory | broad gauge ⓘ |
| governingBody |
Toronto Transit Commission
ⓘ
surface form:
Toronto Transit Commission board
|
| hasConversionIssueWith | standard gauge rolling stock ⓘ |
| historicalReason | continuity with original Toronto street railway tracks ⓘ |
| introducedInCentury | 19th century ⓘ |
| locatedInMetropolitanArea | Greater Toronto Area ⓘ |
| notUsedOnSystem |
Line 1 Yonge–University
ⓘ
surface form:
Toronto subway Line 1 Yonge–University
Line 5 Eglinton ⓘ
surface form:
Toronto subway Line 5 Eglinton
Toronto subway ⓘ
surface form:
Toronto subway Line 6 Finch West
|
| purpose | maintain compatibility across Toronto legacy transit network ⓘ |
| region | Ontario ⓘ |
| standardGaugeWidth | 1435 mm ⓘ |
| trackGaugeWidth |
1495 mm
ⓘ
4 ft 10 7⁄8 in ⓘ |
| usedByOperator | Toronto Transit Commission ⓘ |
| usedInCity | Toronto ⓘ |
| usedOnInfrastructure |
Toronto streetcar tracks
ⓘ
legacy Toronto subway lines ⓘ |
| usedOnLineType |
heavy-rail subway
ⓘ
streetcar light rail ⓘ |
| usedOnSystem |
Toronto streetcar system
ⓘ
Line 2 Bloor–Danforth ⓘ
surface form:
Toronto subway Line 2 Bloor–Danforth
Toronto subway Line 4 Sheppard ⓘ |
| usedOnVehicleType |
streetcar
ⓘ
subway train ⓘ |
| widerThan | standard gauge ⓘ |
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: Toronto gauge Description of subject: Toronto gauge is a slightly wider-than-standard track gauge used by Toronto’s streetcars and older subway lines to maintain compatibility across the city’s legacy transit network.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.