Porter station
E64236
Porter station is a major MBTA transit hub in Cambridge, Massachusetts, serving both Red Line subway and commuter rail trains beneath Porter Square.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Porter station canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T352712 — 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: Porter station Context triple: [Porter Square, hasTransitStation, Porter station]
-
A.
Braintree station
Braintree station is a Massachusetts Bay Transportation Authority (MBTA) rapid transit and commuter rail station in Braintree, Massachusetts, serving as a major park-and-ride hub on Boston’s South Shore.
-
B.
Brunswick station
Brunswick station is a passenger rail station in Brunswick, Maryland, serving as the western endpoint of MARC's Brunswick Line commuter service.
-
C.
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.
-
D.
Newton Highlands station
Newton Highlands station is a light rail stop on the Massachusetts Bay Transportation Authority's Green Line D branch located in the Newton Highlands neighborhood of Newton, Massachusetts.
-
E.
Quincy Center station
Quincy Center station is a major MBTA Red Line rapid transit and commuter rail hub located in downtown Quincy, Massachusetts.
- 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: Porter station Target entity description: Porter station is a major MBTA transit hub in Cambridge, Massachusetts, serving both Red Line subway and commuter rail trains beneath Porter Square.
-
A.
Braintree station
Braintree station is a Massachusetts Bay Transportation Authority (MBTA) rapid transit and commuter rail station in Braintree, Massachusetts, serving as a major park-and-ride hub on Boston’s South Shore.
-
B.
Brunswick station
Brunswick station is a passenger rail station in Brunswick, Maryland, serving as the western endpoint of MARC's Brunswick Line commuter service.
-
C.
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.
-
D.
Newton Highlands station
Newton Highlands station is a light rail stop on the Massachusetts Bay Transportation Authority's Green Line D branch located in the Newton Highlands neighborhood of Newton, Massachusetts.
-
E.
Quincy Center station
Quincy Center station is a major MBTA Red Line rapid transit and commuter rail hub located in downtown Quincy, Massachusetts.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail station
ⓘ
railway station ⓘ rapid transit station ⓘ |
| accessible | yes ⓘ |
| category |
Buildings and structures in Cambridge, Massachusetts
ⓘ
MBTA Commuter Rail stations in Massachusetts ⓘ MBTA Red Line ⓘ
surface form:
MBTA Red Line stations
Railway stations in Middlesex County, Massachusetts ⓘ |
| code | place-portr ⓘ |
| connectsTo |
Porter Square bus stops
ⓘ
pedestrian entrances on Massachusetts Avenue ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | third rail for Red Line tracks ⓘ |
| fareZone | Zone 1A ⓘ |
| hasArtInstallation | public art in station concourse ⓘ |
| hasBicycleFacilities | yes ⓘ |
| hasDepth | one of the deepest MBTA Red Line stations ⓘ |
| hasElevators | yes ⓘ |
| hasEscalators | yes ⓘ |
| hasFareControl |
MBTA CharlieCard
ⓘ
surface form:
MBTA CharlieCard system
|
| hasParking | no dedicated park-and-ride lot ⓘ |
| locatedIn |
Cambridge, Massachusetts
ⓘ
Massachusetts ⓘ Middlesex County, Massachusetts ⓘ Porter Square ⓘ United States of America ⓘ
surface form:
United States
|
| locatedInMetropolitanArea | Greater Boston ⓘ |
| near |
Massachusetts Avenue
ⓘ
Somerville, Massachusetts ⓘ |
| numberOfPlatforms | 2 ⓘ |
| numberOfTracks | 4 ⓘ |
| opened | 1984 ⓘ |
| operator |
MBTA
ⓘ
surface form:
Massachusetts Bay Transportation Authority
|
| ownedBy |
MBTA
ⓘ
surface form:
Massachusetts Bay Transportation Authority
|
| partOfSystem |
MBTA Commuter Rail network
ⓘ
surface form:
MBTA Commuter Rail
MBTA ⓘ
surface form:
MBTA subway
|
| platformConfiguration | island platform ⓘ |
| railGauge | standard gauge ⓘ |
| servesCity | Cambridge, Massachusetts ⓘ |
| servesLine |
Fitchburg Line
ⓘ
MBTA Red Line ⓘ |
| servesMode |
bus
ⓘ
commuter rail ⓘ subway ⓘ |
| servesNeighborhood |
Porter Square
ⓘ
surface form:
Porter Square commercial district
|
| structureType | underground station ⓘ |
| ticketing | MBTA fare vending machines ⓘ |
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: Porter station Description of subject: Porter station is a major MBTA transit hub in Cambridge, Massachusetts, serving both Red Line subway and commuter rail trains beneath Porter Square.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Red Line (MBTA)