Red Line at Jackson
E367333
The Red Line at Jackson is a major Chicago 'L' subway station in the Loop that serves the CTA Red Line and provides a key downtown transfer point between multiple rail lines.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Jackson (Red Line) | 2 |
| Blue Line at Jackson | 1 |
| Red Line at Jackson canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3543602 — 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 at Jackson Context triple: [CTA Blue Line, connectsWith, Red Line at Jackson]
-
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.
-
B.
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.
-
C.
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.
-
D.
Red Line
The Red Line is one of the main lines of the Lisbon Metro system, connecting key transport hubs and eastern districts of Portugal’s capital.
-
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 at Jackson Target entity description: The Red Line at Jackson is a major Chicago 'L' subway station in the Loop that serves the CTA Red Line and provides a key downtown transfer point between multiple rail lines.
-
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.
-
B.
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.
-
C.
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.
-
D.
Red Line
The Red Line is one of the main lines of the Lisbon Metro system, connecting key transport hubs and eastern districts of Portugal’s capital.
-
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 (48)
| Predicate | Object |
|---|---|
| instanceOf |
Chicago 'L' station
ⓘ
rapid transit station ⓘ |
| connectsCorridorTo | Blue Line Jackson station pedestrian tunnel ⓘ |
| fareControlLocation | mezzanine level above platforms ⓘ |
| fareSystem |
CTA farecard
ⓘ
Ventra ⓘ |
| hasAccessibility |
elevators
ⓘ
escalators ⓘ stairs ⓘ |
| hasAmenities |
benches
ⓘ
electronic arrival displays ⓘ lighting ⓘ |
| hasConnection | Chicago Pedway system ⓘ |
| hasEntranceAt |
Jackson Boulevard and State Street
ⓘ
linked to:
South State Street
Van Buren Street and State Street ⓘ
linked to:
Van Buren Street
|
| hasNumberOfPlatforms | 1 ⓘ |
| hasNumberOfTracks | 2 ⓘ |
| hasPlatformConfiguration | island platform ⓘ |
| hasServicePattern | 24-hour Red Line service ⓘ |
| hasSignageStandard |
CTA wayfinding signage
ⓘ
linked to:
CTA
|
| isMajorTransferPoint | true ⓘ |
| isUnderground | true ⓘ |
| locatedIn |
Chicago, Illinois
ⓘ
linked to:
Chicago, Illinois, United States
Loop, Chicago ⓘ
linked to:
Loop (Chicago)
|
| locatedUnder | State Street ⓘ |
| operator | Chicago Transit Authority ⓘ |
| owner | Chicago Transit Authority ⓘ |
| partOfNetwork |
Chicago 'L'
ⓘ
linked to:
Chicago "L"
|
| partOfSystem | Chicago Transit Authority ⓘ |
| providesTransferTo |
Blue Line at Jackson
ⓘ
linked to:
Red Line at Jackson
Brown Line at State/Lake via pedway ⓘ Loop elevated lines via downtown pedway system ⓘ Orange Line at Harold Washington Library–State/Van Buren via pedway ⓘ Pink Line at Harold Washington Library–State/Van Buren via pedway ⓘ Purple Line Express at State/Lake via pedway ⓘ |
| safetyFeatures |
CCTV surveillance
ⓘ
emergency intercoms ⓘ public address system ⓘ |
| servedByLine |
Red Line (CTA)
ⓘ
linked to:
Red Line (Chicago "L")
|
| servesArea |
Chicago Loop business district
ⓘ
linked to:
Chicago Loop
downtown Chicago ⓘ
linked to:
Downtown Chicago area
|
| servesCommuters |
local commuters
ⓘ
suburban commuters ⓘ tourists ⓘ |
| sitsOnCorridor |
State Street subway
ⓘ
linked to:
State Street Subway
|
| structureType | subway station ⓘ |
| ticketing |
automatic fare collection
ⓘ
ventra vending machines ⓘ |
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 at Jackson Description of subject: The Red Line at Jackson is a major Chicago 'L' subway station in the Loop that serves the CTA Red Line and provides a key downtown transfer point between multiple rail lines.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Red Line at Jackson
linked to: Red Line at Jackson
linked to: Red Line at Jackson