Green Line southern leg
E490819
The Green Line southern leg is the portion of Washington, D.C.’s Metrorail Green Line that runs south from downtown through neighborhoods such as Anacostia toward the system’s southern terminus.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Green Line southern leg canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4591435 — 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 southern leg Context triple: [Anacostia station, isOn, Green Line southern leg]
-
A.
Green Line South Side Main Line
The Green Line South Side Main Line is a rapid transit route on Chicago's 'L' system that runs along the city's South Side, connecting multiple neighborhoods to the downtown Loop.
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B.
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.
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C.
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.
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D.
Green Line
The Green Line is one of the main rapid transit corridors of the Chennai Metro system in Chennai, India, connecting key areas of the city via elevated and underground stations.
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E.
Green Line
The Green Line is one of the light rail routes in Houston’s METRORail system, serving the city’s East End and connecting it to downtown.
- 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 southern leg Target entity description: The Green Line southern leg is the portion of Washington, D.C.’s Metrorail Green Line that runs south from downtown through neighborhoods such as Anacostia toward the system’s southern terminus.
-
A.
Green Line South Side Main Line
The Green Line South Side Main Line is a rapid transit route on Chicago's 'L' system that runs along the city's South Side, connecting multiple neighborhoods to the downtown Loop.
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B.
Green Line
The Green Line is one of the main lines of the Lisbon Metro rapid transit system, serving several central and riverside neighborhoods of Portugal’s capital.
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C.
Green Line
The Green Line is a light rail route in Dallas, Texas, operated by Dallas Area Rapid Transit (DART), running through key areas including downtown and connecting several suburbs.
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D.
Green Line
The Green Line is the demarcation line established in the 1949 Armistice Agreements that serves as the internationally recognized boundary between Israel and the territories captured in 1967, including the West Bank.
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E.
Green Line
The Green Line is one of the main rapid transit corridors of the Chennai Metro system in Chennai, India, connecting key areas of the city via elevated and underground stations.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
public transportation infrastructure
ⓘ
rapid transit line segment ⓘ |
| character | underground and elevated metro line ⓘ |
| colorOnSystemMap | green ⓘ |
| connectsDowntownTo |
Anacostia
NERFINISHED
ⓘ
Southeast Washington, D.C. NERFINISHED ⓘ southern Prince George's County, Maryland ⓘ |
| connectsToLineAtStation |
Blue Line at L'Enfant Plaza station
ⓘ
Orange Line at L'Enfant Plaza station NERFINISHED ⓘ Silver Line at L'Enfant Plaza station NERFINISHED ⓘ Yellow Line at L'Enfant Plaza station NERFINISHED ⓘ |
| crossesRiver | Anacostia River NERFINISHED ⓘ |
| direction | southbound from downtown Washington, D.C. ⓘ |
| electrification | 750 V DC third rail ⓘ |
| fareMedium | SmarTrip card NERFINISHED ⓘ |
| fareSystem | distance-based fare system ⓘ |
| hasServiceType | all-day frequent metro service ⓘ |
| hasStation |
Anacostia station
NERFINISHED
ⓘ
Branch Avenue station NERFINISHED ⓘ Congress Heights station NERFINISHED ⓘ L'Enfant Plaza station NERFINISHED ⓘ Navy Yard–Ballpark station NERFINISHED ⓘ Naylor Road station NERFINISHED ⓘ Southern Avenue station NERFINISHED ⓘ Suitland station NERFINISHED ⓘ Waterfront station NERFINISHED ⓘ |
| locatedInMetropolitanArea | Washington metropolitan area NERFINISHED ⓘ |
| modeOfTransport | heavy rail ⓘ |
| openedInStages | 1990s ⓘ |
| operator | Washington Metropolitan Area Transit Authority ⓘ |
| ownedBy | Washington Metropolitan Area Transit Authority ⓘ |
| partOf | Green Line (Washington Metro) NERFINISHED ⓘ |
| purpose |
to improve transit access east of the Anacostia River
ⓘ
to provide rapid transit service between downtown Washington, D.C. and southeastern neighborhoods ⓘ |
| runsThroughNeighborhood |
Anacostia
NERFINISHED
ⓘ
Camp Springs area ⓘ Congress Heights NERFINISHED ⓘ Naylor Road area NERFINISHED ⓘ Suitland NERFINISHED ⓘ Washington Highlands vicinity NERFINISHED ⓘ |
| servesCity | Washington, D.C. NERFINISHED ⓘ |
| servesRegion |
District of Columbia
NERFINISHED
ⓘ
Prince George's County, Maryland NERFINISHED ⓘ |
| southernTerminus | Branch Avenue station NERFINISHED ⓘ |
| system | Washington Metro NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
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 southern leg Description of subject: The Green Line southern leg is the portion of Washington, D.C.’s Metrorail Green Line that runs south from downtown through neighborhoods such as Anacostia toward the system’s southern terminus.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.