Chicago Transit Authority Brown Line stations
E477084
Chicago Transit Authority Brown Line stations are the elevated and subway train stops in Chicago that serve the Brown Line route of the city’s “L” rapid transit system.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Chicago Transit Authority Brown Line stations canonical | 2 |
| CTA Brown Line (nearby stations) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4880672 — 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 Transit Authority Brown Line stations Context triple: [LaSalle/Van Buren station, category, Chicago Transit Authority Brown Line stations]
-
A.
Chicago Transit Authority Green Line stations
Chicago Transit Authority Green Line stations are the train stops served by the Green Line of Chicago’s ‘L’ rapid transit system.
-
B.
Chicago Transit Authority Pink Line stations
Chicago Transit Authority Pink Line stations are the rapid transit stops along the CTA’s Pink Line, serving neighborhoods from the Near West Side of Chicago out to its western terminus.
-
C.
Chicago Avenue station (CTA Brown Line)
Chicago Avenue station (CTA Brown Line) is an elevated Chicago Transit Authority rapid transit stop on the Brown Line serving the Near North Side of Chicago.
-
D.
CTA Brown Line
The CTA Brown Line is a Chicago 'L' rapid transit route that runs from the city's Northwest Side into the downtown Loop, serving numerous residential and commercial neighborhoods.
-
E.
Washington/Wells station (CTA)
Washington/Wells station (CTA) is an elevated Chicago 'L' train station in the Loop that serves multiple lines and provides convenient access to downtown 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: Chicago Transit Authority Brown Line stations Target entity description: Chicago Transit Authority Brown Line stations are the elevated and subway train stops in Chicago that serve the Brown Line route of the city’s “L” rapid transit system.
-
A.
Chicago Transit Authority Green Line stations
Chicago Transit Authority Green Line stations are the train stops served by the Green Line of Chicago’s ‘L’ rapid transit system.
-
B.
Chicago Transit Authority Pink Line stations
Chicago Transit Authority Pink Line stations are the rapid transit stops along the CTA’s Pink Line, serving neighborhoods from the Near West Side of Chicago out to its western terminus.
-
C.
Chicago Avenue station (CTA Brown Line)
Chicago Avenue station (CTA Brown Line) is an elevated Chicago Transit Authority rapid transit stop on the Brown Line serving the Near North Side of Chicago.
-
D.
CTA Brown Line
The CTA Brown Line is a Chicago 'L' rapid transit route that runs from the city's Northwest Side into the downtown Loop, serving numerous residential and commercial neighborhoods.
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E.
Washington/Wells station (CTA)
Washington/Wells station (CTA) is an elevated Chicago 'L' train station in the Loop that serves multiple lines and provides convenient access to downtown civic and commercial destinations.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Chicago Transit Authority infrastructure
ⓘ
rapid transit stations ⓘ |
| accessControl | farecard readers ⓘ |
| accessibilityStandard | ADA accessible (many stations) ⓘ |
| connectTo |
CTA bus routes
ⓘ
other CTA rail lines at transfer points ⓘ |
| designedFor | 8-car trains (post-expansion) ⓘ |
| electrification | third rail ⓘ |
| fareSystem |
Ventra
ⓘ
contactless bank cards ⓘ mobile ticketing ⓘ |
| feature |
benches
ⓘ
bicycle racks ⓘ canopies ⓘ elevators ⓘ escalators ⓘ lighting ⓘ public address systems ⓘ security cameras ⓘ shelters ⓘ stairs ⓘ |
| havePlatformType |
island platform
ⓘ
side platform ⓘ |
| haveStructureType |
at-grade
ⓘ
elevated ⓘ embankment ⓘ subway ⓘ |
| locatedIn |
Chicago
ⓘ
linked to:
Chicago, Illinois, United States
Illinois ⓘ |
| locatedInCountry |
United States
ⓘ
linked to:
United States of America
|
| openedInPeriod | early 20th century (many original stations) ⓘ |
| operatedBy | Chicago Transit Authority ⓘ |
| ownedBy | Chicago Transit Authority ⓘ |
| partOf |
Chicago "L" system
ⓘ
linked to:
Chicago "L"
|
| renovatedDuring |
Brown Line Capacity Expansion Project (2000s)
ⓘ
linked to:
Brown Line Capacity Expansion Project
|
| safetySystem | automatic train control (on line level) ⓘ |
| serveArea |
Chicago Loop
ⓘ
Near North Side ⓘ North Side neighborhoods ⓘ Northwest Side neighborhoods ⓘ |
| serveLine | Brown Line ⓘ |
| ticketBarrierType | turnstiles ⓘ |
| ticketingZoneSystem | flat fare system ⓘ |
| underwentProject | Brown Line Capacity Expansion Project ⓘ |
| useRailGauge | standard gauge ⓘ |
| useRollingStock |
CTA 2600-series railcars (historically)
ⓘ
linked to:
CTA 2600-series railcars
CTA 3200-series railcars ⓘ |
| useSignageStandard | CTA standard station signage ⓘ |
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 Transit Authority Brown Line stations Description of subject: Chicago Transit Authority Brown Line stations are the elevated and subway train stops in Chicago that serve the Brown Line route of the city’s “L” rapid transit system.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Chicago Transit Authority Brown Line stations