Mattapan High-Speed Line
E80880
The Mattapan High-Speed Line is a light rail transit line in Boston, Massachusetts, operating historic trolley cars between Ashmont and Mattapan stations as part of the MBTA system.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ashmont–Mattapan High-Speed Line | 10 |
| Mattapan High-Speed Line canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T639122 — 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: Mattapan High-Speed Line Context triple: [Mattapan Trolley, hasRouteNumber, Mattapan High-Speed Line]
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A.
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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B.
Shore Line East
Shore Line East is a commuter rail service in southern Connecticut that provides passenger trains along the Northeast Corridor between New Haven and shoreline communities.
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C.
Peninsula rail corridor
The Peninsula rail corridor is the major rail line running through California’s San Francisco Peninsula, carrying both commuter and intercity trains between San Francisco and the South Bay.
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D.
White Plains Road Line
The White Plains Road Line is a major New York City Subway route in the Bronx, primarily served by the 2 and 5 trains and running along White Plains Road.
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E.
Amtrak Empire Corridor
The Amtrak Empire Corridor is a major passenger rail route in New York State that connects New York City with Albany and other upstate cities along the Hudson River and beyond.
- 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: Mattapan High-Speed Line Target entity description: The Mattapan High-Speed Line is a light rail transit line in Boston, Massachusetts, operating historic trolley cars between Ashmont and Mattapan stations as part of the MBTA system.
-
A.
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.
-
B.
Shore Line East
Shore Line East is a commuter rail service in southern Connecticut that provides passenger trains along the Northeast Corridor between New Haven and shoreline communities.
-
C.
Peninsula rail corridor
The Peninsula rail corridor is the major rail line running through California’s San Francisco Peninsula, carrying both commuter and intercity trains between San Francisco and the South Bay.
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D.
White Plains Road Line
The White Plains Road Line is a major New York City Subway route in the Bronx, primarily served by the 2 and 5 trains and running along White Plains Road.
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E.
Amtrak Empire Corridor
The Amtrak Empire Corridor is a major passenger rail route in New York State that connects New York City with Albany and other upstate cities along the Hudson River and beyond.
- F. None of above. chosen
Statements (45)
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: Mattapan High-Speed Line Description of subject: The Mattapan High-Speed Line is a light rail transit line in Boston, Massachusetts, operating historic trolley cars between Ashmont and Mattapan stations as part of the MBTA system.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Ashmont–Mattapan High-Speed Line
this entity surface form:
Ashmont–Mattapan High-Speed Line
this entity surface form:
Ashmont–Mattapan High-Speed Line
this entity surface form:
Ashmont–Mattapan High-Speed Line
this entity surface form:
Ashmont–Mattapan High-Speed Line
this entity surface form:
Ashmont–Mattapan High-Speed Line
this entity surface form:
Ashmont–Mattapan High-Speed Line
this entity surface form:
Ashmont–Mattapan High-Speed Line
this entity surface form:
Ashmont–Mattapan High-Speed Line
this entity surface form:
Ashmont–Mattapan High-Speed Line
subject surface form:
Mattapan Yard