Back Bay station
E104961
Back Bay station is a major transportation hub in Boston, Massachusetts, serving MBTA commuter rail, Amtrak, and subway lines in the Back Bay neighborhood.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Back Bay station canonical | 14 |
| Back Bay Station | 5 |
| Back Bay Station (Boston) | 2 |
| Back Bay MBTA station | 1 |
| Back Bay station (MBTA Orange Line and commuter rail) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T639076 — 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: Back Bay station Context triple: [the T, notableStation, Back Bay station]
-
A.
North Station
North Station is a major transportation hub in Boston, Massachusetts, serving as a key commuter rail, subway, and intercity bus terminal integrated with the TD Garden arena.
-
B.
Fenway station
Fenway station is a light rail stop on Boston’s MBTA Green Line serving the Fenway–Kenmore area near Fenway Park.
-
C.
South Station
South Station is Boston’s major intercity rail and bus terminal and a key MBTA subway hub in the city’s downtown.
-
D.
Copley station
Copley station is a major underground MBTA subway stop in Boston’s Back Bay neighborhood, serving multiple branches of the Green Line and providing access to nearby landmarks like Copley Square and the Boston Public Library.
-
E.
Boylston station
Boylston station is a historic underground light rail stop in downtown Boston that serves the MBTA Green Line.
- 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: Back Bay station Target entity description: Back Bay station is a major transportation hub in Boston, Massachusetts, serving MBTA commuter rail, Amtrak, and subway lines in the Back Bay neighborhood.
-
A.
North Station
North Station is a major transportation hub in Boston, Massachusetts, serving as a key commuter rail, subway, and intercity bus terminal integrated with the TD Garden arena.
-
B.
Fenway station
Fenway station is a light rail stop on Boston’s MBTA Green Line serving the Fenway–Kenmore area near Fenway Park.
-
C.
South Station
South Station is Boston’s major intercity rail and bus terminal and a key MBTA subway hub in the city’s downtown.
-
D.
Copley station
Copley station is a major underground MBTA subway stop in Boston’s Back Bay neighborhood, serving multiple branches of the Green Line and providing access to nearby landmarks like Copley Square and the Boston Public Library.
-
E.
Boylston station
Boylston station is a historic underground light rail stop in downtown Boston that serves the MBTA Green Line.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Amtrak station
ⓘ
commuter rail station ⓘ railway station ⓘ subway station ⓘ transportation hub ⓘ |
| accessible | yes ⓘ |
| address | 145 Dartmouth Street, Boston, Massachusetts ⓘ |
| cityServed |
Boston
ⓘ
linked to:
Boston, Massachusetts
|
| commuterService | MBTA commuter rail lines to suburbs southwest and west of Boston ⓘ |
| connectsTo |
Copley Place shopping mall (via passageways)
ⓘ
South End neighborhood (via entrances and streets) ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| fareZone | Zone 1A (MBTA Commuter Rail) ⓘ |
| hasFacility |
restrooms
ⓘ
retail concessions ⓘ ticketing facilities ⓘ waiting area ⓘ |
| hasStructure |
partially enclosed mainline rail platforms
ⓘ
underground platforms for Orange Line ⓘ |
| locatedIn |
Back Bay, Boston, Massachusetts
ⓘ
linked to:
Back Bay
Boston, Massachusetts ⓘ United States ⓘ
linked to:
United States of America
|
| longDistanceService | Amtrak intercity trains on the Northeast Corridor ⓘ |
| nearby |
Copley Square
ⓘ
linked to:
Copley Square, Boston
Hynes Convention Center area ⓘ
linked to:
Hynes Convention Center station
Prudential Center ⓘ |
| neighborhood | Back Bay ⓘ |
| opened | 1987 ⓘ |
| operator |
Amtrak
ⓘ
Massachusetts Bay Transportation Authority ⓘ
linked to:
MBTA
|
| ownedBy |
Massachusetts Bay Transportation Authority
ⓘ
linked to:
MBTA
|
| partOfLine | Northeast Corridor ⓘ |
| partOfSystem |
MBTA Commuter Rail system
ⓘ
linked to:
MBTA Commuter Rail network
MBTA subway system ⓘ
linked to:
Boston subway
|
| platforms | multiple island and side platforms ⓘ |
| railServices |
Amtrak Acela
ⓘ
Amtrak Lake Shore Limited ⓘ Amtrak Northeast Regional ⓘ MBTA Framingham/Worcester Line ⓘ MBTA Franklin/Foxboro Line (limited/indirect service patterns) ⓘ
linked to:
Franklin/Foxboro Line
MBTA Needham Line ⓘ MBTA Providence/Stoughton Line ⓘ
linked to:
MBTA Commuter Rail Providence/Stoughton Line
|
| regionServed | Greater Boston ⓘ |
| replaced | older Back Bay station on the New York, New Haven and Hartford Railroad main line ⓘ |
| servedBy |
Amtrak
ⓘ
MBTA Commuter Rail ⓘ
linked to:
MBTA Commuter Rail network
MBTA Green Line (E branch via nearby Prudential and Copley) ⓘ
linked to:
Green Line E branch
MBTA Orange Line ⓘ |
| tracks |
Northeast Corridor tracks
ⓘ
linked to:
Northeast Corridor
|
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: Back Bay station Description of subject: Back Bay station is a major transportation hub in Boston, Massachusetts, serving MBTA commuter rail, Amtrak, and subway lines in the Back Bay neighborhood.
Referenced by (23)
Full triples — surface form annotated when it differs from this entity's canonical label.
Boston Public Library (Copley Square main branch)
→
publicTransitAccess
→
Back Bay station (MBTA Orange Line and commuter rail)
ⓘ
linked to: Back Bay station
linked to: Back Bay station
linked to: Back Bay station
linked to: Back Bay station
subject linked to:
Copley Place shopping mall (via passageways)
linked to: Back Bay station
linked to: Back Bay station
linked to: Back Bay station
linked to: Back Bay station
linked to: Back Bay station