Jackson (CTA Red Line station)
E323946
Jackson is a major Chicago Transit Authority Red Line subway station located in downtown Chicago’s Loop, serving as a key transfer point within the city’s rapid transit system.
All labels observed (6)
How this entity was disambiguated
This entity first appeared as the object of triple T3041533 — 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: Jackson (CTA Red Line station) Context triple: [Monroe, hasAdjacentStation, Jackson (CTA Red Line station)]
-
A.
Chicago/Franklin station (Chicago "L")
Chicago/Franklin station was a former elevated rapid transit stop on Chicago’s "L" system that operated on the North Side main line near the city’s River North area.
-
B.
Pulaski station (CTA Orange Line)
Pulaski station (CTA Orange Line) is an elevated rapid transit stop on Chicago’s Orange Line serving the West Elsdon neighborhood near Midway Airport.
-
C.
Addison station (CTA Red Line)
Addison station (CTA Red Line) is a Chicago 'L' rapid transit stop on the Red Line located in the Lakeview neighborhood, best known for serving fans attending games and events at nearby Wrigley Field.
-
D.
Belmont station (CTA Red Line)
Belmont station (CTA Red Line) is a major Chicago 'L' rapid transit hub in the Lakeview neighborhood where the Red, Brown, and Purple Lines converge.
-
E.
Clark/Lake station (CTA)
Clark/Lake station (CTA) is a major elevated and subway transfer station in downtown Chicago’s Loop, serving multiple Chicago 'L' lines and providing convenient access to nearby civic and commercial destinations.
- 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: Jackson (CTA Red Line station) Target entity description: Jackson is a major Chicago Transit Authority Red Line subway station located in downtown Chicago’s Loop, serving as a key transfer point within the city’s rapid transit system.
-
A.
Chicago/Franklin station (Chicago "L")
Chicago/Franklin station was a former elevated rapid transit stop on Chicago’s "L" system that operated on the North Side main line near the city’s River North area.
-
B.
Pulaski station (CTA Orange Line)
Pulaski station (CTA Orange Line) is an elevated rapid transit stop on Chicago’s Orange Line serving the West Elsdon neighborhood near Midway Airport.
-
C.
Addison station (CTA Red Line)
Addison station (CTA Red Line) is a Chicago 'L' rapid transit stop on the Red Line located in the Lakeview neighborhood, best known for serving fans attending games and events at nearby Wrigley Field.
-
D.
Belmont station (CTA Red Line)
Belmont station (CTA Red Line) is a major Chicago 'L' rapid transit hub in the Lakeview neighborhood where the Red, Brown, and Purple Lines converge.
-
E.
Clark/Lake station (CTA)
Clark/Lake station (CTA) is a major elevated and subway transfer station in downtown Chicago’s Loop, serving multiple Chicago 'L' lines and providing convenient access to nearby civic and commercial destinations.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Chicago 'L' station
ⓘ
rapid transit station ⓘ subway station ⓘ |
| accessible | yes ⓘ |
| connectsNorthTo | Monroe (CTA Red Line station) ⓘ |
| connectsSouthTo | Harrison (CTA Red Line station) ⓘ |
| connectsTo | CTA bus services ⓘ |
| fareControlLocation | mezzanine level ⓘ |
| fareControlType | barrier faregates ⓘ |
| fareSystem | Ventra ⓘ |
| hasAccessibility | elevators ⓘ |
| hasEntranceOn |
Jackson Boulevard
NERFINISHED
ⓘ
State Street ⓘ Van Buren Street NERFINISHED ⓘ |
| hasFeature |
customer assistance kiosks
ⓘ
electronic faregates ⓘ paid transfer tunnel to Blue Line ⓘ security cameras ⓘ underground concourse ⓘ |
| hasInformationDisplays | digital arrival boards ⓘ |
| hasLightingType | fluorescent lighting ⓘ |
| hasSeating | platform benches ⓘ |
| hasSignageStandard | CTA corporate signage ⓘ |
| hasTransferTo |
Adams/Wabash station
ⓘ
Harold Washington Library–State/Van Buren station ⓘ Jackson (CTA Red Line station) self-linksurface differs ⓘ
surface form:
Jackson (CTA Blue Line station)
Harold Washington Library–State/Van Buren station ⓘ
surface form:
Library-State/Van Buren (Loop Elevated)
|
| isMajorTransferPoint | yes ⓘ |
| isUnderground | yes ⓘ |
| locatedIn |
Chicago Loop
ⓘ
Chicago, Illinois, United States ⓘ
surface form:
Chicago, Illinois
United States of America ⓘ
surface form:
United States
|
| locatedInTunnel | State Street Subway ⓘ |
| locatedUnder | State Street ⓘ |
| numberOfPlatforms | 1 ⓘ |
| numberOfTracks | 2 ⓘ |
| openedInDecade | 1940s ⓘ |
| operatedBy | Chicago Transit Authority ⓘ |
| ownedBy | Chicago Transit Authority ⓘ |
| partOf |
State Street Subway
ⓘ
surface form:
State Street Subway corridor
|
| partOfSystem |
Chicago "L"
ⓘ
surface form:
Chicago 'L'
|
| platformType | island platform ⓘ |
| servedByLine |
Red Line (Chicago "L")
ⓘ
surface form:
Red Line (CTA)
|
| servesArea |
Chicago Loop
ⓘ
surface form:
Chicago Loop business district
downtown Chicago ⓘ |
| structureType | subway ⓘ |
| ticketingSystem |
contactless smart card
ⓘ
magnetic stripe tickets ⓘ |
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: Jackson (CTA Red Line station) Description of subject: Jackson is a major Chicago Transit Authority Red Line subway station located in downtown Chicago’s Loop, serving as a key transfer point within the city’s rapid transit system.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Jackson station (CTA Red Line)
this entity surface form:
Jackson station (CTA Blue Line)
subject surface form:
Jackson station (CTA Blue Line)
this entity surface form:
Jackson station (CTA Red Line)
this entity surface form:
Jackson station (Chicago Transit Authority Blue and Red lines)
this entity surface form:
Jackson (Red Line station)
Jackson (CTA Red Line station)
→
hasTransferTo
→
Jackson (CTA Red Line station)
self-linksurface differs
ⓘ
this entity surface form:
Jackson (CTA Blue Line station)
subject surface form:
Jackson (CTA Red Line station)
this entity surface form:
Jackson (CTA Blue Line station)
subject surface form:
Washington (CTA Blue Line station)
this entity surface form:
Jackson (CTA Blue Line station)