Toronto Transit Commission Line 1 extension

E200162

public transit infrastructure project rapid transit extension subway line extension

The Toronto Transit Commission Line 1 extension is a subway line expansion that extends Toronto’s primary north–south rapid transit route into York Region, improving regional connectivity and access to the city’s transit network.

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All labels observed (6)

Label	Occurrences
Toronto–York Spadina Subway Extension	5
Scarborough Subway Extension	3
Spadina subway extension	1
Spadina subway extension corridor	1
Toronto Transit Commission Line 1 Yonge–University extension	1
Toronto Transit Commission Line 1 extension canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T1771608 — 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 Transit Commission Line 1 extension
Context triple: [York Region, Ontario, hasMajorRailService, Toronto Transit Commission Line 1 extension]

A. 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.
B. Spadina streetcar line
The Spadina streetcar line is a major Toronto Transit Commission route running along Spadina Avenue, connecting key downtown destinations including the University of Toronto’s St. George campus.
C. Waterloo & City line
The Waterloo & City line is a short, deep-level London Underground railway line that provides a direct commuter link between Waterloo station and the City of London.
D. IND Crosstown Line
The IND Crosstown Line is a New York City Subway line in Brooklyn and Queens served by the G train, notable for being the only major line that does not enter Manhattan.
E. Eglinton East
Eglinton East is a diverse residential and commercial neighbourhood in the eastern part of Toronto, Ontario, known for its multicultural community and urban character.
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 Transit Commission Line 1 extension
Target entity description: The Toronto Transit Commission Line 1 extension is a subway line expansion that extends Toronto’s primary north–south rapid transit route into York Region, improving regional connectivity and access to the city’s transit network.

A. 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.
B. Spadina streetcar line
The Spadina streetcar line is a major Toronto Transit Commission route running along Spadina Avenue, connecting key downtown destinations including the University of Toronto’s St. George campus.
C. Waterloo & City line
The Waterloo & City line is a short, deep-level London Underground railway line that provides a direct commuter link between Waterloo station and the City of London.
D. IND Crosstown Line
The IND Crosstown Line is a New York City Subway line in Brooklyn and Queens served by the G train, notable for being the only major line that does not enter Manhattan.
E. Eglinton East
Eglinton East is a diverse residential and commercial neighbourhood in the eastern part of Toronto, Ontario, known for its multicultural community and urban character.
F. None of above. chosen

Statements (32)

Predicate	Object
instanceOf	public transit infrastructure project ⓘ rapid transit extension ⓘ subway line extension ⓘ
benefit	improved access to employment and education in Toronto ⓘ increased transit capacity on Line 1 ⓘ reduced travel times between York Region and Toronto ⓘ
connectsWith	Toronto Transit Commission bus network ⓘ Toronto Transit Commission streetcar network ⓘ linked to: Toronto streetcar system regional transit services in York Region ⓘ
country	Canada ⓘ
electrification	third rail ⓘ
extendsFrom	Toronto ⓘ
extendsTo	York Region ⓘ linked to: York Region, Ontario
fareSystem	TTC fare system ⓘ
hasLanguageOfSignage	English ⓘ French ⓘ
infrastructureType	grade-separated transit ⓘ underground railway ⓘ
locatedIn	Toronto ⓘ York Region ⓘ linked to: York Region, Ontario
modeOfTransport	rapid transit ⓘ
networkRole	primary north–south rapid transit corridor extension ⓘ
operator	Toronto Transit Commission ⓘ
partOf	Toronto Transit Commission Line 1 Yonge–University ⓘ linked to: Line 1 Yonge–University Toronto subway system ⓘ linked to: Toronto subway
purpose	improve access to Toronto’s transit network ⓘ improve regional connectivity ⓘ
railGauge	standard gauge ⓘ
regionServed	City of Toronto ⓘ linked to: Toronto York Region ⓘ linked to: York Region, Ontario
transportNetwork	Greater Toronto Area transit network ⓘ linked to: Greater Toronto and Hamilton Area transit network
usesRollingStock	subway trains ⓘ

How these facts were elicited