MBTA bus route 502
E190488
MBTA bus route 502 is an express bus line in the Boston area that connects Watertown and downtown Boston, primarily serving commuters along the Massachusetts Turnpike corridor.
All labels observed (1)
| Label | Occurrences |
|---|---|
| MBTA bus route 502 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1608616 — 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 bus route 502 Context triple: [Watertown Square, servedBy, MBTA bus route 502]
-
A.
MBTA bus route 52
MBTA bus route 52 is a Massachusetts Bay Transportation Authority bus line serving parts of Newton and Watertown in the Greater Boston area.
-
B.
MBTA bus route 57
MBTA bus route 57 is a key Boston-area bus line that connects downtown Boston with Allston, Brighton, and Watertown, serving as a major transit corridor along Commonwealth Avenue and beyond.
-
C.
MBTA bus route 28
MBTA bus route 28 is a major Boston-area bus line that runs along Blue Hill Avenue and Warren Street, connecting Mattapan and Roxbury to downtown transit hubs and serving some of the system’s highest-ridership corridors.
-
D.
MBTA bus route 70
MBTA bus route 70 is a Massachusetts Bay Transportation Authority bus line that runs between Cambridge and Waltham, serving several communities along the Charles River corridor.
-
E.
MBTA bus route 71
MBTA bus route 71 is a Massachusetts Bay Transportation Authority bus line that primarily operates between Harvard Square in Cambridge and Watertown, serving neighborhoods along Mount Auburn Street.
- 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 bus route 502 Target entity description: MBTA bus route 502 is an express bus line in the Boston area that connects Watertown and downtown Boston, primarily serving commuters along the Massachusetts Turnpike corridor.
-
A.
MBTA bus route 52
MBTA bus route 52 is a Massachusetts Bay Transportation Authority bus line serving parts of Newton and Watertown in the Greater Boston area.
-
B.
MBTA bus route 57
MBTA bus route 57 is a key Boston-area bus line that connects downtown Boston with Allston, Brighton, and Watertown, serving as a major transit corridor along Commonwealth Avenue and beyond.
-
C.
MBTA bus route 28
MBTA bus route 28 is a major Boston-area bus line that runs along Blue Hill Avenue and Warren Street, connecting Mattapan and Roxbury to downtown transit hubs and serving some of the system’s highest-ridership corridors.
-
D.
MBTA bus route 70
MBTA bus route 70 is a Massachusetts Bay Transportation Authority bus line that runs between Cambridge and Waltham, serving several communities along the Charles River corridor.
-
E.
MBTA bus route 71
MBTA bus route 71 is a Massachusetts Bay Transportation Authority bus line that primarily operates between Harvard Square in Cambridge and Watertown, serving neighborhoods along Mount Auburn Street.
- F. None of above. chosen
Statements (27)
| Predicate | Object |
|---|---|
| instanceOf |
MBTA bus route
ⓘ
express bus route ⓘ |
| connects |
Watertown
ⓘ
downtown Boston ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| fareSystem | MBTA bus fare system ⓘ |
| hasRouteNumber | 502 ⓘ |
| hasService | weekday service ⓘ |
| modeOfTransport | bus ⓘ |
| operatedBy |
Massachusetts Bay Transportation Authority
ⓘ
linked to:
MBTA
|
| operatesIn |
Middlesex County, Massachusetts
ⓘ
Suffolk County, Massachusetts ⓘ |
| partOfNetwork | MBTA bus network ⓘ |
| primaryCorridor | Massachusetts Turnpike ⓘ |
| servesArea |
Boston, Massachusetts
ⓘ
Greater Boston ⓘ Watertown, Massachusetts ⓘ |
| servicePattern | commuter-oriented ⓘ |
| serviceType | express ⓘ |
| state | Massachusetts ⓘ |
| terminus |
Watertown
ⓘ
downtown Boston ⓘ |
| typicalRiders | commuters ⓘ |
| usesHighway |
Interstate 90
ⓘ
Massachusetts Turnpike ⓘ |
| vehicleType |
diesel bus
ⓘ
hybrid bus ⓘ |
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 bus route 502 Description of subject: MBTA bus route 502 is an express bus line in the Boston area that connects Watertown and downtown Boston, primarily serving commuters along the Massachusetts Turnpike corridor.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.