South Boston Transitway
E157161
The South Boston Transitway is an underground bus rapid transit tunnel in Boston that carries MBTA Silver Line routes between South Station and the Seaport District.
All labels observed (4)
| Label | Occurrences |
|---|---|
| South Boston Piers Transitway | 1 |
| South Boston Transitway canonical | 1 |
| South Boston Waterfront transportation corridor | 1 |
| South Station–Seaport corridor | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1192811 — 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: South Boston Transitway Context triple: [MBTA Silver Line, usesTunnel, South Boston Transitway]
-
A.
MBTA Ashmont Branch
The MBTA Ashmont Branch is a rapid transit line of Boston’s Red Line that runs from JFK/UMass station through Dorchester to Ashmont, serving several southern neighborhoods of the city.
-
B.
Rose Kennedy Greenway
The Rose Kennedy Greenway is a contemporary linear park in downtown Boston featuring gardens, public art, and community events along the former elevated highway corridor.
-
C.
MBTA Green Line E branch
The MBTA Green Line E branch is a light rail line in Boston that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street, serving major hospitals, universities, and residential neighborhoods.
-
D.
MBTA Green Line D branch
The MBTA Green Line D branch is a light rail line in the Boston metropolitan area that runs between downtown Boston and several western suburbs, including Newton and Riverside.
-
E.
MBTA Blue Line
The MBTA Blue Line is a rapid transit line in the Boston metropolitan area that runs primarily along the city’s northeastern corridor, connecting downtown Boston with East Boston, Logan Airport, and Revere.
- 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: South Boston Transitway Target entity description: The South Boston Transitway is an underground bus rapid transit tunnel in Boston that carries MBTA Silver Line routes between South Station and the Seaport District.
-
A.
MBTA Ashmont Branch
The MBTA Ashmont Branch is a rapid transit line of Boston’s Red Line that runs from JFK/UMass station through Dorchester to Ashmont, serving several southern neighborhoods of the city.
-
B.
Rose Kennedy Greenway
The Rose Kennedy Greenway is a contemporary linear park in downtown Boston featuring gardens, public art, and community events along the former elevated highway corridor.
-
C.
MBTA Green Line E branch
The MBTA Green Line E branch is a light rail line in Boston that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street, serving major hospitals, universities, and residential neighborhoods.
-
D.
MBTA Green Line D branch
The MBTA Green Line D branch is a light rail line in the Boston metropolitan area that runs between downtown Boston and several western suburbs, including Newton and Riverside.
-
E.
MBTA Blue Line
The MBTA Blue Line is a rapid transit line in the Boston metropolitan area that runs primarily along the city’s northeastern corridor, connecting downtown Boston with East Boston, Logan Airport, and Revere.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
bus rapid transit tunnel
ⓘ
transportation infrastructure ⓘ underground transit tunnel ⓘ |
| connects |
South Boston
ⓘ
surface form:
Boston Seaport District
South Station ⓘ |
| connectsTo |
Logan International Airport via Silver Line SL1
ⓘ
South Boston Waterfront employment centers ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | overhead catenary ⓘ |
| fareSystem | MBTA fare system ⓘ |
| hasAccessibility | accessible stations ⓘ |
| hasLanes | bus-only lanes ⓘ |
| hasPortal |
near South Station
ⓘ
near World Trade Center ⓘ |
| hasRightOfWay | exclusive bus right-of-way ⓘ |
| hasStation |
Courthouse station
ⓘ
Silver Line Way station ⓘ South Station ⓘ World Trade Center station ⓘ |
| isPartOfCorridor |
South Boston Transitway
self-linksurface differs
ⓘ
surface form:
South Boston Waterfront transportation corridor
|
| locatedInNeighborhood | South Boston ⓘ |
| location |
Boston, Massachusetts
ⓘ
surface form:
Boston
Massachusetts ⓘ |
| modeOfTransport | bus rapid transit ⓘ |
| openedForService | 2004 ⓘ |
| operator |
MBTA
ⓘ
surface form:
Massachusetts Bay Transportation Authority
|
| owner |
MBTA
ⓘ
surface form:
Massachusetts Bay Transportation Authority
|
| partOf |
Boston transit system
ⓘ
MBTA Silver Line ⓘ
surface form:
MBTA Silver Line system
|
| primaryVehicleType | dual-mode buses ⓘ |
| purpose | improve transit access to South Boston Waterfront ⓘ |
| safetyFeatures |
emergency exits
ⓘ
fire suppression systems ⓘ ventilation systems ⓘ |
| servedByAgency | MBTA ⓘ |
| serves |
MBTA Silver Line
ⓘ
Seaport District ⓘ South Station ⓘ |
| structureType | tunnel ⓘ |
| tunnelType | underground ⓘ |
| usedBy |
Silver Line SL1
ⓘ
Silver Line SL2 ⓘ Silver Line SL3 ⓘ Silver Line SL2 ⓘ
surface form:
Silver Line SLW
|
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: South Boston Transitway Description of subject: The South Boston Transitway is an underground bus rapid transit tunnel in Boston that carries MBTA Silver Line routes between South Station and the Seaport District.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
South Boston Piers Transitway
this entity surface form:
South Station–Seaport corridor
this entity surface form:
South Boston Waterfront transportation corridor