Chicago "L" Green Line
E526887
The Chicago "L" Green Line is one of the city’s rapid transit routes, running primarily along the South and West Sides and serving key destinations including the Loop and the West Side’s Lake Street corridor.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Chicago "L" Green Line canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4702230 — 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: Chicago "L" Green Line Context triple: [South Side Main Line, system, Chicago "L" Green Line]
-
A.
Red Line (Chicago "L")
The Red Line is a major rapid transit route of the Chicago "L" system, running north–south through the city and operating 24 hours a day.
-
B.
Orange Line (CTA)
The Orange Line (CTA) is a rapid transit route in Chicago that connects the Loop with Midway International Airport and several Southwest Side neighborhoods.
-
C.
Brown Line
The Brown Line is a rapid transit route of Chicago's "L" system that primarily serves the city's North Side and northwest neighborhoods.
-
D.
CTA Blue Line
The CTA Blue Line is a major Chicago 'L' rapid transit route that runs between O'Hare International Airport, downtown Chicago, and the city's western neighborhoods and suburbs.
-
E.
Orange Line
The Orange Line is one of the primary rapid transit routes in the Washington Metro system, running east–west through Washington, D.C. and its Virginia and Maryland 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: Chicago "L" Green Line Target entity description: The Chicago "L" Green Line is one of the city’s rapid transit routes, running primarily along the South and West Sides and serving key destinations including the Loop and the West Side’s Lake Street corridor.
-
A.
Red Line (Chicago "L")
The Red Line is a major rapid transit route of the Chicago "L" system, running north–south through the city and operating 24 hours a day.
-
B.
Orange Line (CTA)
The Orange Line (CTA) is a rapid transit route in Chicago that connects the Loop with Midway International Airport and several Southwest Side neighborhoods.
-
C.
Brown Line
The Brown Line is a rapid transit route of Chicago's "L" system that primarily serves the city's North Side and northwest neighborhoods.
-
D.
CTA Blue Line
The CTA Blue Line is a major Chicago 'L' rapid transit route that runs between O'Hare International Airport, downtown Chicago, and the city's western neighborhoods and suburbs.
-
E.
Orange Line
The Orange Line is one of the primary rapid transit routes in the Washington Metro system, running east–west through Washington, D.C. and its Virginia and Maryland suburbs.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
elevated railway line
ⓘ
rapid transit line ⓘ |
| alsoRunsOn |
at-grade sections
ⓘ
embankment ⓘ |
| connectsWith |
Blue Line
NERFINISHED
ⓘ
Brown Line NERFINISHED ⓘ Orange Line NERFINISHED ⓘ Pink Line NERFINISHED ⓘ Purple Line NERFINISHED ⓘ Red Line NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | third rail ⓘ |
| fareCollection | proof-of-payment at station turnstiles ⓘ |
| fareSystem | Ventra ⓘ |
| hasBranch |
Ashland/63rd branch
NERFINISHED
ⓘ
East 63rd/Cottage Grove branch ⓘ Lake Street branch NERFINISHED ⓘ South Side Elevated branch NERFINISHED ⓘ |
| hasTerminus |
Ashland/63rd station
NERFINISHED
ⓘ
Cottage Grove station NERFINISHED ⓘ Harlem/Lake station NERFINISHED ⓘ |
| lineColor | green ⓘ |
| locale | Chicago, Illinois NERFINISHED ⓘ |
| notableEvent | line extensively rebuilt and reopened in 1996 ⓘ |
| openingDate | 1892 ⓘ |
| operator | Chicago Transit Authority ⓘ |
| owner | Chicago Transit Authority ⓘ |
| partOf | Chicago "L" system NERFINISHED ⓘ |
| passesThrough | Loop Elevated NERFINISHED ⓘ |
| primaryRightOfWay | elevated structure ⓘ |
| servesArea |
Chicago Loop
NERFINISHED
ⓘ
South Side of Chicago NERFINISHED ⓘ West Side of Chicago NERFINISHED ⓘ |
| servesCorridor | Lake Street corridor NERFINISHED ⓘ |
| servesLandmark |
Chicago Loop business district
NERFINISHED
ⓘ
Illinois Medical District (via connecting buses from West Side stations) NERFINISHED ⓘ |
| servesStation |
Adams/Wabash station
NERFINISHED
ⓘ
Ashland/63rd station NERFINISHED ⓘ Clark/Lake station NERFINISHED ⓘ Cottage Grove station NERFINISHED ⓘ Garfield station NERFINISHED ⓘ Harlem/Lake station NERFINISHED ⓘ Roosevelt station NERFINISHED ⓘ State/Lake station NERFINISHED ⓘ |
| serviceType | rapid transit ⓘ |
| system | Chicago "L" NERFINISHED ⓘ |
| trackConfiguration | double track ⓘ |
| usesTrackGauge | 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: Chicago "L" Green Line Description of subject: The Chicago "L" Green Line is one of the city’s rapid transit routes, running primarily along the South and West Sides and serving key destinations including the Loop and the West Side’s Lake Street corridor.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.