Line 3 Union–Pearson Express
E143066
Line 3 Union–Pearson Express is a dedicated airport rail link in Toronto that provides rapid transit service between Union Station in downtown and Toronto Pearson International Airport.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Union Pearson Express | 2 |
| Line 3 Union–Pearson Express canonical | 1 |
| Union Pearson Express network | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1257418 — 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: Line 3 Union–Pearson Express Context triple: [Union Station, Toronto, connectedTo, Line 3 Union–Pearson Express]
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A.
Center City Commuter Connection
The Center City Commuter Connection is an underground rail tunnel in downtown Philadelphia that links formerly separate commuter rail lines into a unified through-running system.
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B.
Newark Light Rail
Newark Light Rail is a light rail transit system serving the city of Newark, New Jersey, connecting downtown, residential neighborhoods, and key regional transit hubs.
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C.
Hudson–Bergen Light Rail
The Hudson–Bergen Light Rail is a modern light rail transit system serving waterfront communities and urban centers in Hudson County, New Jersey, providing frequent local service along the Hudson River corridor.
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D.
Hudson Line
The Hudson Line is a major passenger rail route running along the east bank of the Hudson River in New York, serving both commuter and intercity trains between New York City and points upstate.
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E.
Suburban Line
The Suburban Line is a commuter rail service of the Beijing Subway system that connects the city center with outlying suburban districts.
- 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: Line 3 Union–Pearson Express Target entity description: Line 3 Union–Pearson Express is a dedicated airport rail link in Toronto that provides rapid transit service between Union Station in downtown and Toronto Pearson International Airport.
-
A.
Center City Commuter Connection
The Center City Commuter Connection is an underground rail tunnel in downtown Philadelphia that links formerly separate commuter rail lines into a unified through-running system.
-
B.
Newark Light Rail
Newark Light Rail is a light rail transit system serving the city of Newark, New Jersey, connecting downtown, residential neighborhoods, and key regional transit hubs.
-
C.
Hudson–Bergen Light Rail
The Hudson–Bergen Light Rail is a modern light rail transit system serving waterfront communities and urban centers in Hudson County, New Jersey, providing frequent local service along the Hudson River corridor.
-
D.
Hudson Line
The Hudson Line is a major passenger rail route running along the east bank of the Hudson River in New York, serving both commuter and intercity trains between New York City and points upstate.
-
E.
Suburban Line
The Suburban Line is a commuter rail service of the Beijing Subway system that connects the city center with outlying suburban districts.
- F. None of above. chosen
Statements (46)
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: Line 3 Union–Pearson Express Description of subject: Line 3 Union–Pearson Express is a dedicated airport rail link in Toronto that provides rapid transit service between Union Station in downtown and Toronto Pearson International Airport.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
UP Express at Union Station
this entity surface form:
Union Pearson Express
subject surface form:
UP Express at Union Station
this entity surface form:
Union Pearson Express network
this entity surface form:
Union Pearson Express