Amtrak at Back Bay station
E921754
Amtrak at Back Bay station refers to the intercity passenger rail services, including routes like the Northeast Regional and Acela, that stop at Boston’s centrally located Back Bay transportation hub.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Amtrak at Back Bay station canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11368979 — 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: Amtrak at Back Bay station Context triple: [MBTA Orange Line Back Bay branch, connectsWith, Amtrak at Back Bay station]
-
A.
Amtrak at South Station
Amtrak at South Station is the intercity passenger rail service operating from Boston’s historic South Station, providing regional and long-distance train connections along the Northeast Corridor and beyond.
-
B.
MBTA Commuter Rail at North Station
MBTA Commuter Rail at North Station is a major Boston rail hub where regional trains connect downtown with numerous suburbs and outlying cities across Massachusetts.
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C.
MBTA Commuter Rail at South Station
MBTA Commuter Rail at South Station is the regional rail service hub in downtown Boston that provides commuter train connections between the city and surrounding suburbs and cities across Massachusetts and neighboring states.
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D.
MBTA Silver Line at South Station
The MBTA Silver Line at South Station is a key Boston bus rapid transit hub providing underground and surface connections between South Station and destinations including the Seaport District and Logan Airport.
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E.
MBTA commuter rail at Back Bay
MBTA commuter rail at Back Bay is a major Boston rail station where regional commuter trains connect with subway services, including the Green Line’s E Branch.
- 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: Amtrak at Back Bay station Target entity description: Amtrak at Back Bay station refers to the intercity passenger rail services, including routes like the Northeast Regional and Acela, that stop at Boston’s centrally located Back Bay transportation hub.
-
A.
Amtrak at South Station
Amtrak at South Station is the intercity passenger rail service operating from Boston’s historic South Station, providing regional and long-distance train connections along the Northeast Corridor and beyond.
-
B.
MBTA Commuter Rail at North Station
MBTA Commuter Rail at North Station is a major Boston rail hub where regional trains connect downtown with numerous suburbs and outlying cities across Massachusetts.
-
C.
MBTA Commuter Rail at South Station
MBTA Commuter Rail at South Station is the regional rail service hub in downtown Boston that provides commuter train connections between the city and surrounding suburbs and cities across Massachusetts and neighboring states.
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D.
MBTA Silver Line at South Station
The MBTA Silver Line at South Station is a key Boston bus rapid transit hub providing underground and surface connections between South Station and destinations including the Seaport District and Logan Airport.
-
E.
MBTA commuter rail at Back Bay
MBTA commuter rail at Back Bay is a major Boston rail station where regional commuter trains connect with subway services, including the Green Line’s E Branch.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
intercity passenger rail service
ⓘ
rail transport service stop ⓘ |
| connectsToStation |
Boston South Station
NERFINISHED
ⓘ
Chicago Union Station NERFINISHED ⓘ New York Penn Station NERFINISHED ⓘ Providence station NERFINISHED ⓘ Route 128 station NERFINISHED ⓘ Washington Union Station NERFINISHED ⓘ |
| electrification | overhead catenary on Northeast Corridor ⓘ |
| fareSystem | Amtrak national fare system ⓘ |
| hasAmenity |
accessibility features at Back Bay station
ⓘ
restrooms at Back Bay station ⓘ ticketing facilities at Back Bay station ⓘ waiting area at Back Bay station ⓘ |
| hasServiceType |
high-speed rail
ⓘ
intercity ⓘ long-distance rail ⓘ |
| hasWebsite | https://www.amtrak.com ⓘ |
| integratedWith |
MBTA Commuter Rail at Back Bay
NERFINISHED
ⓘ
MBTA Orange Line at Back Bay ⓘ local bus services at Back Bay ⓘ |
| locatedInCity | Boston NERFINISHED ⓘ |
| locatedInCountry |
United States of America
ⓘ
surface form:
United States
|
| locatedInState | Massachusetts ⓘ |
| offersClassOfService |
Business Class
ⓘ
Coach ⓘ First Class on Acela NERFINISHED ⓘ |
| operator | Amtrak ⓘ |
| partOfCorridor | Northeast Corridor NERFINISHED ⓘ |
| railGauge | standard gauge ⓘ |
| safetyAuthority | Federal Railroad Administration NERFINISHED ⓘ |
| servedByRoute |
Acela
NERFINISHED
ⓘ
Acela Boston–Washington service NERFINISHED ⓘ Lake Shore Limited NERFINISHED ⓘ Lake Shore Limited Boston section NERFINISHED ⓘ Northeast Regional NERFINISHED ⓘ Northeast Regional Boston–Washington service NERFINISHED ⓘ |
| servesArea |
Back Bay neighborhood of Boston
NERFINISHED
ⓘ
Greater Boston region NERFINISHED ⓘ |
| servesStation | Back Bay station NERFINISHED ⓘ |
| ticketingAvailable |
Amtrak mobile app
ⓘ
online ⓘ station ticket machines ⓘ |
| ticketingSystem | Amtrak reservation system ⓘ |
| timeZone | Eastern Time NERFINISHED ⓘ |
| usesBrand | Amtrak NERFINISHED ⓘ |
| usesStationCode | BBY NERFINISHED ⓘ |
| usesTrack | Northeast Corridor mainline tracks NERFINISHED ⓘ |
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: Amtrak at Back Bay station Description of subject: Amtrak at Back Bay station refers to the intercity passenger rail services, including routes like the Northeast Regional and Acela, that stop at Boston’s centrally located Back Bay transportation hub.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.