Red Line
E1043426
The Red Line is one of the main lines of the Doha Metro in Qatar, running along a north–south axis and connecting key areas including central Doha and Al Wakra.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Red Line canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T13406594 — 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: Red Line Context triple: [Al Wakra Metro Station, servedByLine, Red Line]
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A.
Red Line
The Red Line is a primary route of the MetroLink light rail system serving key destinations in the St. Louis metropolitan area.
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B.
Red Line
Red Line is a song by the American rock band Trans Am, known for their experimental blend of post-rock, electronic, and krautrock influences.
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C.
Red Line
The Red Line is one of the major corridors of the Delhi Metro rapid transit system, serving numerous densely populated areas in and around Delhi.
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D.
Red Line
Red Line is one of the main rapid transit corridors of the Hyderabad Metro system in Hyderabad, India.
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E.
Red Line
The Red Line is a light rail route in the Salt Lake City TRAX system that connects key destinations across the Salt Lake Valley.
- 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: Red Line Target entity description: The Red Line is one of the main lines of the Doha Metro in Qatar, running along a north–south axis and connecting key areas including central Doha and Al Wakra.
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A.
Red Line
Red Line is one of the main rapid transit routes of the Dubai Metro, running along key areas of the city and serving many of its major commercial and residential districts.
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B.
Red Line
The Red Line is one of the main light rail routes of Dublin’s Luas tram system, running east–west across the city and serving key central and suburban areas.
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C.
Red Line
The Red Line is a major light rail route in the Dallas Area Rapid Transit (DART) system serving key corridors across the Dallas–Fort Worth metro area.
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D.
Red Line
The Red Line is one of the major corridors of the Delhi Metro rapid transit system, serving numerous densely populated areas in and around Delhi.
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E.
Red Line
Red Line is a major rapid transit route in the Washington Metro system, running through key areas of Washington, D.C., and its Maryland suburbs.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
metro line
ⓘ
rapid transit line ⓘ |
| character |
at-grade
ⓘ
elevated ⓘ underground ⓘ |
| cityServed | Doha NERFINISHED ⓘ |
| color | red ⓘ |
| country | Qatar ⓘ |
| direction | north–south ⓘ |
| electrification | 750 V DC third rail ⓘ |
| fareSystem | integrated Doha Metro fare system ⓘ |
| hasDepot | Al Wakra depot NERFINISHED ⓘ |
| hasStation |
Al Bidda station
NERFINISHED
ⓘ
Al Wakra station NERFINISHED ⓘ DECC station NERFINISHED ⓘ Hamad International Airport T1 station NERFINISHED ⓘ Legtaifiya station NERFINISHED ⓘ Lusail station NERFINISHED ⓘ Msheireb station NERFINISHED ⓘ West Bay QIC station NERFINISHED ⓘ |
| interchangeStation |
Al Bidda station
NERFINISHED
ⓘ
Msheireb station NERFINISHED ⓘ |
| interchangeWith |
Gold Line (Doha Metro)
NERFINISHED
ⓘ
Green Line (Doha Metro) NERFINISHED ⓘ |
| lineLength | about 40 km ⓘ |
| locatedIn | Doha NERFINISHED ⓘ |
| numberOfStations | 18 ⓘ |
| openingDate | 2019-05-08 ⓘ |
| operator | Qatar Rail NERFINISHED ⓘ |
| owner | Qatar Rail NERFINISHED ⓘ |
| partOf | Doha Metro NERFINISHED ⓘ |
| regionServed |
Al Daayen Municipality
NERFINISHED
ⓘ
Al Wakrah Municipality NERFINISHED ⓘ |
| rollingStock | Doha Metro driverless trains ⓘ |
| safetySystem | CBTC NERFINISHED ⓘ |
| serves |
Al Wakra
NERFINISHED
ⓘ
Hamad International Airport NERFINISHED ⓘ Lusail NERFINISHED ⓘ central Doha NERFINISHED ⓘ |
| servesPurpose |
airport access
ⓘ
urban transit ⓘ |
| system | Doha Metro NERFINISHED ⓘ |
| terminus |
Al Wakra
NERFINISHED
ⓘ
Hamad International Airport T1 NERFINISHED ⓘ Lusail NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
| trainControl | driverless ⓘ |
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: Red Line Description of subject: The Red Line is one of the main lines of the Doha Metro in Qatar, running along a north–south axis and connecting key areas including central Doha and Al Wakra.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.