MBTA Green Line A branch
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The MBTA Green Line A branch was a former light rail line in Boston and its western suburbs that once ran between downtown and Watertown before being replaced by bus service.
All labels observed (1)
| Label | Occurrences |
|---|---|
| MBTA Green Line A branch canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1620070 — 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: MBTA Green Line A branch Context triple: [MBTA bus route 57, historicalPredecessor, MBTA Green Line A branch]
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A.
MBTA Green Line B branch
The MBTA Green Line B branch is a light rail service in Boston that runs along Commonwealth Avenue, primarily serving Boston University and the Allston–Brighton neighborhoods.
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B.
MBTA Green Line E branch
The MBTA Green Line E branch is a light rail line in Boston that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street, serving major hospitals, universities, and residential neighborhoods.
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C.
MBTA Green Line D branch
The MBTA Green Line D branch is a light rail line in the Boston metropolitan area that runs between downtown Boston and several western suburbs, including Newton and Riverside.
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D.
MBTA Green Line C branch
The MBTA Green Line C branch is a light rail service in Boston and Brookline that runs primarily along Beacon Street, connecting Cleveland Circle to downtown Boston.
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E.
MBTA Blue Line
The MBTA Blue Line is a rapid transit line in the Boston metropolitan area that runs primarily along the city’s northeastern corridor, connecting downtown Boston with East Boston, Logan Airport, and Revere.
- 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: MBTA Green Line A branch Target entity description: The MBTA Green Line A branch was a former light rail line in Boston and its western suburbs that once ran between downtown and Watertown before being replaced by bus service.
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A.
MBTA Green Line B branch
The MBTA Green Line B branch is a light rail service in Boston that runs along Commonwealth Avenue, primarily serving Boston University and the Allston–Brighton neighborhoods.
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B.
MBTA Green Line E branch
The MBTA Green Line E branch is a light rail line in Boston that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street, serving major hospitals, universities, and residential neighborhoods.
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C.
MBTA Green Line D branch
The MBTA Green Line D branch is a light rail line in the Boston metropolitan area that runs between downtown Boston and several western suburbs, including Newton and Riverside.
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D.
MBTA Green Line C branch
The MBTA Green Line C branch is a light rail service in Boston and Brookline that runs primarily along Beacon Street, connecting Cleveland Circle to downtown Boston.
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E.
MBTA Blue Line
The MBTA Blue Line is a rapid transit line in the Boston metropolitan area that runs primarily along the city’s northeastern corridor, connecting downtown Boston with East Boston, Logan Airport, and Revere.
- F. None of above. chosen
Statements (31)
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: MBTA Green Line A branch Description of subject: The MBTA Green Line A branch was a former light rail line in Boston and its western suburbs that once ran between downtown and Watertown before being replaced by bus service.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.