Trillium Line
E154448
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.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Trillium Line canonical | 3 |
| Dow’s Lake–Trillium Line rail corridor | 1 |
| Line 1 (Confederation Line) | 1 |
| Line 2 (Trillium Line) | 1 |
| Ottawa O-Train Confederation Line | 1 |
| Ottawa O-Train network | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1329932 — 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: Trillium Line Context triple: [OC Transpo, operatorOf, Trillium Line]
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
Line 1 Yonge–University
Line 1 Yonge–University is the busiest and oldest subway line in Toronto’s transit system, forming a U-shaped route through the city’s downtown core and major north–south corridors.
-
E.
Edmonton LRT
Edmonton LRT is the light rail transit system serving the city of Edmonton, Alberta, providing urban and suburban passenger rail service across multiple 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: Trillium Line Target entity description: 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.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
Line 1 Yonge–University
Line 1 Yonge–University is the busiest and oldest subway line in Toronto’s transit system, forming a U-shaped route through the city’s downtown core and major north–south corridors.
-
E.
Edmonton LRT
Edmonton LRT is the light rail transit system serving the city of Edmonton, Alberta, providing urban and suburban passenger rail service across multiple lines.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
diesel light rail line
ⓘ
light rail transit line ⓘ |
| cityServed | Ottawa ⓘ |
| connects |
downtown Ottawa area
ⓘ
southern Ottawa communities ⓘ |
| country | Canada ⓘ |
| electrification | non-electrified ⓘ |
| fareSystem | OC Transpo fare system ⓘ |
| hasBrand | O-Train ⓘ |
| hasMode | rail ⓘ |
| isPartOf |
Ottawa public transit network
ⓘ
linked to:
Ottawa bus network
|
| locatedIn |
Canada
ⓘ
Ontario ⓘ Ottawa ⓘ |
| network |
Ottawa O-Train network
ⓘ
linked to:
Trillium Line
|
| operator | OC Transpo ⓘ |
| partOf | O-Train ⓘ |
| primaryFunction |
commuter transport
ⓘ
rapid transit corridor ⓘ |
| province | Ontario ⓘ |
| publicTransportAuthority |
City of Ottawa
ⓘ
linked to:
Ottawa
|
| regionServed | National Capital Region ⓘ |
| rollingStockType | diesel multiple unit ⓘ |
| serves |
Carleton University area
ⓘ
downtown-adjacent areas ⓘ south Ottawa ⓘ |
| system | O-Train ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | rapid transit ⓘ |
| usesFuel | diesel ⓘ |
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: Trillium Line Description of subject: 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.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Trillium Line
linked to: Trillium Line
linked to: Trillium Line
linked to: Trillium Line
linked to: Trillium Line