Red Line
E426993
The Red Line is the primary light rail route of Houston's METRORail system, running through key central corridors including downtown and the Texas Medical Center.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Red Line canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4177054 — 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: [Houston METRORail, line, Red Line]
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A.
Red Line
The Red Line is a major rapid transit route in Chicago that runs north–south through the city, serving as one of the busiest lines in its subway and elevated rail system.
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B.
Red Line
The Red Line is a major rapid transit route in the Boston metropolitan area, operated by the MBTA and running primarily north–south through key neighborhoods and suburbs.
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C.
Red Line
The Red Line is one of the primary heavy-rail rapid transit routes in Atlanta’s MARTA system, running north–south and serving key destinations across the metropolitan area.
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D.
Red Line
Red Line was the original name of Los Angeles Metro’s B Line, a heavy-rail subway corridor serving key neighborhoods between Downtown Los Angeles and North Hollywood.
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E.
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.
- 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 the primary light rail route of Houston's METRORail system, running through key central corridors including downtown and the Texas Medical Center.
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A.
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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B.
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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C.
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.
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D.
Red Line
The Red Line is one of the primary heavy-rail rapid transit routes in Atlanta’s MARTA system, running north–south and serving key destinations across the metropolitan area.
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E.
Red Line
The Red Line is a major rapid transit route in the Boston metropolitan area, operated by the MBTA and running primarily north–south through key neighborhoods and suburbs.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
light rail line
ⓘ
public transit route ⓘ |
| accessibility | wheelchair accessible ⓘ |
| category |
Light rail in Texas
ⓘ
Rail transport in Houston ⓘ |
| color | red ⓘ |
| connectsWith |
METRO Park & Ride buses
NERFINISHED
ⓘ
METRO local bus network NERFINISHED ⓘ METRORail Green Line NERFINISHED ⓘ METRORail Purple Line NERFINISHED ⓘ |
| corridorType | central corridor ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | overhead line ⓘ |
| fareSystem |
METRO Q Fare Card
NERFINISHED
ⓘ
METRO day pass ⓘ |
| hasRightOfWay |
dedicated transit right-of-way
ⓘ
street-running segments ⓘ |
| hasStationType | at-grade stations ⓘ |
| locatedIn |
Harris County, Texas
NERFINISHED
ⓘ
Houston ⓘ
surface form:
Houston, Texas
|
| operator |
METRO (Houston)
NERFINISHED
ⓘ
Metropolitan Transit Authority of Harris County NERFINISHED ⓘ |
| ownedBy | Metropolitan Transit Authority of Harris County NERFINISHED ⓘ |
| partOf | METRORail system NERFINISHED ⓘ |
| primaryFunction | mass transit for central Houston ⓘ |
| regionServed | Greater Houston NERFINISHED ⓘ |
| role | primary METRORail route ⓘ |
| safetySystem | signalized intersections ⓘ |
| servesArea |
Downtown Houston
NERFINISHED
ⓘ
Midtown Houston NERFINISHED ⓘ Museum District (Houston) NERFINISHED ⓘ Northside (Houston) NERFINISHED ⓘ Texas Medical Center NERFINISHED ⓘ |
| servesLandmark |
Downtown Houston business district
NERFINISHED
ⓘ
Downtown Houston sports and entertainment venues ⓘ Houston Museum District NERFINISHED ⓘ NRG Park area ⓘ Texas Medical Center institutions NERFINISHED ⓘ |
| serviceFrequency | high-frequency urban service ⓘ |
| servicePattern | urban rail transit ⓘ |
| system | METRORail NERFINISHED ⓘ |
| ticketingMethod | proof-of-payment ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | light rail ⓘ |
| usesInfrastructure |
dedicated rail tracks
ⓘ
overhead catenary system ⓘ |
| vehicleType | light rail vehicles ⓘ |
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 the primary light rail route of Houston's METRORail system, running through key central corridors including downtown and the Texas Medical Center.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.