Blue Line (St. Louis MetroLink)
E854937
The Blue Line is one of the two primary light rail routes in the St. Louis MetroLink system, providing service between downtown St. Louis and the western suburbs.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Blue Line (St. Louis MetroLink) canonical | 1 |
| MetroLink Blue Line | 1 |
| St. Louis MetroLink Blue Line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10279481 — 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: Blue Line (St. Louis MetroLink) Context triple: [Red Line (St. Louis MetroLink), sharesTracksWith, Blue Line (St. Louis MetroLink)]
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A.
RTA Blue Line
RTA Blue Line is a light rail transit route in Cleveland, Ohio, operated by the Greater Cleveland Regional Transit Authority and serving key corridors between downtown and the eastern suburbs.
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B.
Central Corridor of St. Louis
The Central Corridor of St. Louis is a major urban spine running through the city that encompasses several of its most prominent neighborhoods, cultural institutions, and employment centers.
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C.
Blue Line
The Blue Line is a light rail route in the Dallas Area Rapid Transit (DART) system serving key neighborhoods and suburbs in the Dallas–Fort Worth metroplex.
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D.
Blue Line
The Blue Line is a planned rapid transit corridor of Bengaluru’s Namma Metro network intended to expand connectivity across additional parts of the city.
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E.
Blue Line
The Blue Line is one of the color-coded rapid transit routes in the Washington Metro system, running through key parts of Washington, D.C. and its Virginia suburbs.
- 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: Blue Line (St. Louis MetroLink) Target entity description: The Blue Line is one of the two primary light rail routes in the St. Louis MetroLink system, providing service between downtown St. Louis and the western suburbs.
-
A.
RTA Blue Line
RTA Blue Line is a light rail transit route in Cleveland, Ohio, operated by the Greater Cleveland Regional Transit Authority and serving key corridors between downtown and the eastern suburbs.
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B.
Central Corridor of St. Louis
The Central Corridor of St. Louis is a major urban spine running through the city that encompasses several of its most prominent neighborhoods, cultural institutions, and employment centers.
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C.
Blue Line
The Blue Line is one of the color-coded rapid transit routes in the Washington Metro system, running through key parts of Washington, D.C. and its Virginia suburbs.
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D.
Blue Line
The Blue Line is a light rail route in the Dallas Area Rapid Transit (DART) system serving key neighborhoods and suburbs in the Dallas–Fort Worth metroplex.
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E.
Blue Line
The Blue Line is a planned rapid transit corridor of Bengaluru’s Namma Metro network intended to expand connectivity across additional parts of the city.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
light rail line
ⓘ
public transit route ⓘ |
| brand | Metro Transit (St. Louis) NERFINISHED ⓘ |
| color | blue ⓘ |
| connectsState |
Illinois
NERFINISHED
ⓘ
Missouri NERFINISHED ⓘ |
| connectsWith |
Central West End area
NERFINISHED
ⓘ
Civic Center Transit Center NERFINISHED ⓘ St. Louis Lambert International Airport via Red Line transfer ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | overhead catenary ⓘ |
| fareMedium |
mobile ticketing (via Metro Transit app)
ⓘ
monthly passes ⓘ paper tickets ⓘ |
| fareSystem | integrated Metro Transit fare system ⓘ |
| gauge | standard gauge ⓘ |
| hasStation |
Brentwood I-64 station
NERFINISHED
ⓘ
Central West End station NERFINISHED ⓘ Civic Center station NERFINISHED ⓘ Clayton station NERFINISHED ⓘ Fairview Heights station NERFINISHED ⓘ Forsyth station NERFINISHED ⓘ Maplewood–Manchester station NERFINISHED ⓘ Richmond Heights station NERFINISHED ⓘ Shrewsbury–Lansdowne I-44 station NERFINISHED ⓘ Skinker station NERFINISHED ⓘ Sunnen station NERFINISHED ⓘ University City–Big Bend station NERFINISHED ⓘ |
| location | St. Louis metropolitan area NERFINISHED ⓘ |
| numberOfTracks | 2 ⓘ |
| openedSegment | Shrewsbury extension NERFINISHED ⓘ |
| operator | Bi-State Development Agency NERFINISHED ⓘ |
| partOf | MetroLink (St. Louis) system NERFINISHED ⓘ |
| region | Midwestern United States ⓘ |
| safetySystem | signaled light rail ⓘ |
| serves |
downtown St. Louis
ⓘ
western suburbs of St. Louis ⓘ |
| servesCounty |
St. Clair County, Illinois
NERFINISHED
ⓘ
St. Louis County, Missouri NERFINISHED ⓘ |
| servicePattern | all-day frequent service ⓘ |
| sharesTracksWith | Red Line (St. Louis MetroLink) NERFINISHED ⓘ |
| state |
Illinois
ⓘ
Missouri ⓘ |
| system | MetroLink (St. Louis) NERFINISHED ⓘ |
| terminus |
Fairview Heights station
NERFINISHED
ⓘ
Shrewsbury–Lansdowne I-44 station NERFINISHED ⓘ |
| transitType | light rail ⓘ |
| usesRollingStock |
Siemens SD-400 light rail vehicles
NERFINISHED
ⓘ
Siemens SD-460 light rail vehicles NERFINISHED ⓘ |
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: Blue Line (St. Louis MetroLink) Description of subject: The Blue Line is one of the two primary light rail routes in the St. Louis MetroLink system, providing service between downtown St. Louis and the western suburbs.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Red Line (St. Louis MetroLink)
this entity surface form:
St. Louis MetroLink Blue Line
this entity surface form:
MetroLink Blue Line