Copley station
E53386
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Copley station canonical | 15 |
| Copley station (MBTA Green Line) | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T269485 — 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: Copley station Context triple: [MBTA Green Line D branch, hasStation, Copley station]
-
A.
Ruggles station
Ruggles station is a major multimodal transit hub in Boston, Massachusetts, serving MBTA Orange Line trains, multiple commuter rail lines, and numerous bus routes.
-
B.
Boylston station
Boylston station is a historic underground light rail stop in downtown Boston that serves the MBTA Green Line.
-
C.
Quincy Center station
Quincy Center station is a major MBTA Red Line rapid transit and commuter rail hub located in downtown Quincy, Massachusetts.
-
D.
Belmont Center station
Belmont Center station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop located in the commercial center of Belmont, Massachusetts.
-
E.
Park Street station
Park Street station is a major downtown Boston transit hub on the MBTA system, serving multiple Green Line branches and providing connections to the Red 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: Copley station Target entity description: 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.
-
A.
Ruggles station
Ruggles station is a major multimodal transit hub in Boston, Massachusetts, serving MBTA Orange Line trains, multiple commuter rail lines, and numerous bus routes.
-
B.
Boylston station
Boylston station is a historic underground light rail stop in downtown Boston that serves the MBTA Green Line.
-
C.
Quincy Center station
Quincy Center station is a major MBTA Red Line rapid transit and commuter rail hub located in downtown Quincy, Massachusetts.
-
D.
Belmont Center station
Belmont Center station is a Massachusetts Bay Transportation Authority (MBTA) commuter rail stop located in the commercial center of Belmont, Massachusetts.
-
E.
Park Street station
Park Street station is a major downtown Boston transit hub on the MBTA system, serving multiple Green Line branches and providing connections to the Red Line.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
MBTA station
ⓘ
subway station ⓘ underground station ⓘ |
| accessibleBy | elevator ⓘ |
| city |
Boston
ⓘ
linked to:
Boston, Massachusetts
|
| country |
United States
ⓘ
linked to:
United States of America
|
| electrification | overhead catenary and third rail not used (light rail overhead power) ⓘ |
| fareSystem |
CharlieCard
ⓘ
CharlieTicket ⓘ |
| fareZone | 1A ⓘ |
| hasAccessibility | yes ⓘ |
| hasArt | public art installations ⓘ |
| hasBicycleFacilities | no ⓘ |
| hasConnectionTo |
Boston Public Library McKim Building
ⓘ
Boylston Street ⓘ
linked to:
Boylston Street, Boston
Copley Square ⓘ
linked to:
Copley Square, Boston
Dartmouth Street ⓘ John Hancock Tower ⓘ
linked to:
John Hancock Tower, Boston
Trinity Church in the City of Boston ⓘ |
| hasExitTo |
Boylston Street
ⓘ
linked to:
Boylston Street, Boston
Dartmouth Street ⓘ |
| hasParking | no ⓘ |
| hasStationCode | not used (MBTA Green Line stations generally lack codes) ⓘ |
| locatedIn |
Back Bay
ⓘ
Boston ⓘ
linked to:
Boston, Massachusetts
Massachusetts ⓘ United States ⓘ
linked to:
United States of America
|
| nearbyLandmark |
Boston Public Library
ⓘ
Copley Square ⓘ
linked to:
Copley Square, Boston
Old South Church ⓘ Trinity Church ⓘ
linked to:
Trinity Church in the City of Boston
|
| numberOfPlatforms | 2 ⓘ |
| numberOfTracks | 2 ⓘ |
| opened | 1914 ⓘ |
| operatedBy |
Massachusetts Bay Transportation Authority
ⓘ
linked to:
MBTA
|
| ownedBy |
Massachusetts Bay Transportation Authority
ⓘ
linked to:
MBTA
|
| partOfLine | MBTA Green Line ⓘ |
| partOfNetwork |
MBTA subway
ⓘ
linked to:
MBTA
|
| platformType | side platforms ⓘ |
| servedByLine |
Green Line B branch
ⓘ
Green Line C branch ⓘ
linked to:
Green Line C Branch
Green Line D branch ⓘ
linked to:
MBTA Green Line D branch
Green Line E branch ⓘ |
| servesNeighborhood | Back Bay ⓘ |
| state | Massachusetts ⓘ |
| structureType | underground ⓘ |
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: Copley station Description of subject: 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.
Referenced by (18)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
MBTA Green Line D branch (nearby stations)
subject linked to:
Copley Square, Boston
Boston Public Library (Copley Square main branch)
→
publicTransitAccess
→
Copley station (MBTA Green Line)
ⓘ
linked to: Copley station
subject linked to:
Green Line
linked to: Copley station
linked to: Copley station
subject linked to:
Red Line and Green Line
subject linked to:
E branch of Boston’s MBTA Green Line light rail service
subject linked to:
Prudential MBTA station
subject linked to:
Prudential