Yellow Line (CTA)
E81677
The Yellow Line (CTA), also known as the Skokie Swift, is a short Chicago Transit Authority rapid transit route that runs between Howard and Skokie without serving downtown Chicago.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Yellow Line (CTA) canonical | 6 |
| Chicago Transit Authority Yellow Line | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T626557 — 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: Yellow Line (CTA) Context triple: [Red Line (CTA), connectsWith, Yellow Line (CTA)]
-
A.
Purple Line (CTA)
The Purple Line (CTA) is a rapid transit route in Chicago primarily serving the northern suburbs and Evanston, with express service to downtown during weekday rush hours.
-
B.
CTA Red Line
The CTA Red Line is a major rapid transit route in Chicago that runs north–south through the city, including service through the downtown Loop.
-
C.
CTA Green Line
The CTA Green Line is one of Chicago's elevated rapid transit routes, running primarily along the city's West and South Sides and serving the downtown Loop.
-
D.
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.
-
E.
Orange Line
The Orange Line is a rapid transit route in Chicago that connects the city's Loop with Midway International Airport as part of the Chicago "L" system.
- 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: Yellow Line (CTA) Target entity description: The Yellow Line (CTA), also known as the Skokie Swift, is a short Chicago Transit Authority rapid transit route that runs between Howard and Skokie without serving downtown Chicago.
-
A.
Purple Line (CTA)
The Purple Line (CTA) is a rapid transit route in Chicago primarily serving the northern suburbs and Evanston, with express service to downtown during weekday rush hours.
-
B.
CTA Red Line
The CTA Red Line is a major rapid transit route in Chicago that runs north–south through the city, including service through the downtown Loop.
-
C.
CTA Green Line
The CTA Green Line is one of Chicago's elevated rapid transit routes, running primarily along the city's West and South Sides and serving the downtown Loop.
-
D.
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.
-
E.
Orange Line
The Orange Line is a rapid transit route in Chicago that connects the city's Loop with Midway International Airport as part of the Chicago "L" system.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Chicago Transit Authority line
ⓘ
railway line ⓘ rapid transit line ⓘ |
| accessibility | all stations accessible ⓘ |
| alsoKnownAs | Skokie Swift ⓘ |
| connectsWith |
Purple Line (CTA)
ⓘ
Red Line (Chicago "L") ⓘ
surface form:
Red Line (CTA)
|
| country |
United States of America
ⓘ
surface form:
United States
|
| county | Cook County, Illinois ⓘ |
| depot | Howard Yard ⓘ |
| doesNotServe | downtown Chicago ⓘ |
| electrification | third rail ⓘ |
| fareIntegration | free transfers at Howard station with Red and Purple Lines ⓘ |
| fareSystem | Ventra ⓘ |
| fareZone | CTA flat fare system ⓘ |
| formerName | Skokie Swift ⓘ |
| lineColor | yellow ⓘ |
| locale | Chicago metropolitan area ⓘ |
| mapRepresentation | shown as yellow on CTA system map ⓘ |
| notableFeature |
does not enter Chicago Loop
ⓘ
shortest CTA rail line by route length ⓘ |
| numberOfStations | 3 ⓘ |
| openedAsSkokieSwift | 1964 ⓘ |
| operator | Chicago Transit Authority ⓘ |
| owner | Chicago Transit Authority ⓘ |
| peakUse | commuter traffic between Skokie and CTA rail network ⓘ |
| primaryTransferPoint | Howard station ⓘ |
| rebrandedAsYellowLine | 1993 ⓘ |
| region | Illinois ⓘ |
| rightOfWay |
Chicago North Shore and Milwaukee Railroad
ⓘ
surface form:
former Chicago North Shore and Milwaukee Railroad
|
| rollingStock | CTA 5000-series railcars ⓘ |
| routeLength | approximately 4.7 miles ⓘ |
| safetyIncident | service suspended May 2015 after embankment collapse ⓘ |
| serves |
Chicago, Illinois, United States
ⓘ
surface form:
Chicago, Illinois
Skokie, Illinois ⓘ |
| serviceAreaCharacteristic | suburban ⓘ |
| servicePattern | shuttle service between Howard and Skokie ⓘ |
| serviceResumed | January 2016 ⓘ |
| serviceType | all-stop service ⓘ |
| system | Chicago "L" ⓘ |
| terminus |
Dempster–Skokie station
ⓘ
Howard station ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | rapid transit ⓘ |
| website | https://www.transitchicago.com/yellowline/ ⓘ |
| weekdayService | operates daily ⓘ |
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: Yellow Line (CTA) Description of subject: The Yellow Line (CTA), also known as the Skokie Swift, is a short Chicago Transit Authority rapid transit route that runs between Howard and Skokie without serving downtown Chicago.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Red Line (CTA)
subject surface form:
Purple Line (CTA)
this entity surface form:
Chicago Transit Authority Yellow Line
this entity surface form:
Chicago Transit Authority Yellow Line