Green Line D
E585527
Green Line D is a branch of Boston's MBTA Green Line light rail system, running primarily along a former commuter rail right-of-way through several western suburbs into the city.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Green Line D branch | 2 |
| Green Line D branch trains | 2 |
| Green Line D canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6138324 — 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: Green Line D Context triple: [D Branch, lineDesignation, Green Line D]
-
A.
Green Line
The Green Line is one of the color-coded routes of the Tyne and Wear Metro rapid transit system serving the Newcastle upon Tyne area in northeast England.
-
B.
Green Line
The Green Line is one of the color-coded rapid transit routes in the Washington Metro system, serving key neighborhoods in Washington, D.C. and parts of Maryland.
-
C.
Green Line
The Green Line is one of Chicago's elevated rapid transit routes, running primarily along the city's West and South Sides as part of the Chicago "L" system.
-
D.
Green Line
The Green Line is one of the main rapid transit routes of the Dubai Metro, serving key districts along Dubai Creek and connecting important commercial and residential areas.
-
E.
Green Line
Green Line is a hybrid-oriented trim level of the Saturn Aura midsize sedan designed to offer improved fuel efficiency and lower emissions.
- 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: Green Line D Target entity description: Green Line D is a branch of Boston's MBTA Green Line light rail system, running primarily along a former commuter rail right-of-way through several western suburbs into the city.
-
A.
Green Line
The Green Line is one of the color-coded rapid transit routes in the Washington Metro system, serving key neighborhoods in Washington, D.C. and parts of Maryland.
-
B.
Green Line
The Green Line is one of Chicago's elevated rapid transit routes, running primarily along the city's West and South Sides as part of the Chicago "L" system.
-
C.
Green Line
The Green Line is one of the color-coded rapid transit routes in Atlanta’s MARTA rail system, serving key stations on the city’s east–west corridor.
-
D.
Green Line
The Green Line is one of the main rapid transit routes of the Dubai Metro, serving key districts along Dubai Creek and connecting important commercial and residential areas.
-
E.
Green Line
Green Line is a hybrid-oriented trim level of the Saturn Aura midsize sedan designed to offer improved fuel efficiency and lower emissions.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf | light rail line ⓘ |
| category |
Light rail in Massachusetts
ⓘ
MBTA Green Line ⓘ |
| connectsWith |
MBTA Commuter Rail (at some stations)
ⓘ
linked to:
MBTA Commuter Rail stations
MBTA bus network ⓘ other MBTA Green Line branches ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| electrification | overhead catenary and trolley wire (Green Line standard) ⓘ |
| fareMedium |
CharlieCard
ⓘ
CharlieTicket ⓘ MBTA mobile ticketing and contactless payments ⓘ |
| fareSystem | MBTA fare system ⓘ |
| hasFeature |
high-platform or raised-boarding stops at many stations
ⓘ
park-and-ride lots at some suburban stations ⓘ |
| lineColor | green ⓘ |
| locatedIn |
Greater Boston
ⓘ
Massachusetts ⓘ |
| mode | surface and grade-separated light rail ⓘ |
| operator |
Massachusetts Bay Transportation Authority
ⓘ
linked to:
MBTA
|
| owner |
Massachusetts Bay Transportation Authority
ⓘ
linked to:
MBTA
|
| partOf | MBTA Green Line ⓘ |
| rollingStock |
MBTA Green Line light rail vehicles
ⓘ
linked to:
MBTA Green Line rolling stock
|
| safetySystem | MBTA Green Line signaling and train protection systems ⓘ |
| servesArea | western suburbs of Boston ⓘ |
| servesCity | Boston ⓘ |
| servicePattern | all-stop local service ⓘ |
| system | MBTA rapid transit system ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | light rail ⓘ |
| usesRightOfWay | former commuter rail right-of-way ⓘ |
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: Green Line D Description of subject: Green Line D is a branch of Boston's MBTA Green Line light rail system, running primarily along a former commuter rail right-of-way through several western suburbs into the city.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Green Line D
linked to: Green Line D
linked to: Green Line D