Dearborn Subway (Blue Line)

E868096

rapid transit subway segment underground rail line

Dearborn Subway (Blue Line) is the underground segment of Chicago’s Blue Line that runs through downtown via Dearborn Street, connecting key Loop stations and facilitating rapid transit across the city’s core.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (4)

Label	Occurrences
Milwaukee–Dearborn subway	2
Dearborn Subway (Blue Line) canonical	1
Milwaukee-Dearborn subway	1
Milwaukee–Dearborn subway / O'Hare branch corridor	1

How this entity was disambiguated

This entity first appeared as the object of triple T10511185 — 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: Dearborn Subway (Blue Line)
Context triple: [Clark/Lake station (CTA), hasSubwaySection, Dearborn Subway (Blue Line)]

A. Monroe (Red Line)
Monroe (Red Line) is a Chicago 'L' rapid transit station in the Loop located in the median of State Street and served by the Red Line.
B. Metra Electric District line
The Metra Electric District line is a commuter rail line in the Chicago metropolitan area that runs from downtown Chicago to its southern suburbs, serving key destinations along the South Side and beyond.
C. Sixth Avenue Line
The Sixth Avenue Line is a major New York City Subway trunk line in Manhattan that primarily carries B, D, F, and M trains along Sixth Avenue.
D. 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.
E. Fourth Avenue Line
The Fourth Avenue Line is a major New York City Subway trunk line in Brooklyn that carries several services, including the N train, along a north–south corridor.
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: Dearborn Subway (Blue Line)
Target entity description: Dearborn Subway (Blue Line) is the underground segment of Chicago’s Blue Line that runs through downtown via Dearborn Street, connecting key Loop stations and facilitating rapid transit across the city’s core.

A. Monroe (Red Line)
Monroe (Red Line) is a Chicago 'L' rapid transit station in the Loop located in the median of State Street and served by the Red Line.
B. Metra Electric District line
The Metra Electric District line is a commuter rail line in the Chicago metropolitan area that runs from downtown Chicago to its southern suburbs, serving key destinations along the South Side and beyond.
C. Sixth Avenue Line
The Sixth Avenue Line is a major New York City Subway trunk line in Manhattan that primarily carries B, D, F, and M trains along Sixth Avenue.
D. 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.
E. Fourth Avenue Line
The Fourth Avenue Line is a major New York City Subway trunk line in Brooklyn that carries several services, including the N train, along a north–south corridor.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	rapid transit subway segment ⓘ underground rail line ⓘ
connects	Forest Park branch of the Blue Line NERFINISHED ⓘ Loop stations ⓘ Northwest Side of Chicago NERFINISHED ⓘ O'Hare branch of the Blue Line NERFINISHED ⓘ West Side of Chicago NERFINISHED ⓘ
connectsTo	Metra commuter rail via nearby downtown stations ⓘ numerous CTA bus routes in the Loop ⓘ
connectsWith	Loop elevated lines via transfer stations ⓘ Red Line via pedestrian transfer at Jackson–State/Lake–Dearborn complex ⓘ
electrification	third rail ⓘ
fareCollection	automated turnstiles ⓘ
fareMediumAccepted	Ventra card NERFINISHED ⓘ contactless bank cards ⓘ mobile tickets ⓘ
fareSystem	CTA fare system ⓘ
hasRightOfWay	exclusive ⓘ
hasRole	core downtown trunk for Blue Line ⓘ
hasStation	Clark/Lake station NERFINISHED ⓘ Jackson station (Blue Line) NERFINISHED ⓘ LaSalle station (Blue Line) NERFINISHED ⓘ Monroe station (Blue Line) NERFINISHED ⓘ Washington station (Blue Line) NERFINISHED ⓘ
infrastructureType	tunnel ⓘ
isGradeSeparated	true ⓘ
isUnderground	true ⓘ
lineColor	Blue ⓘ
locatedIn	Chicago, Illinois, United States ⓘ surface form: Chicago, Illinois United States of America ⓘ surface form: United States
openedAsPartOf	Chicago subway system expansion ⓘ
operatedBy	Chicago Transit Authority NERFINISHED ⓘ
ownedBy	Chicago Transit Authority ⓘ
partOf	Chicago Transit Authority Blue Line NERFINISHED ⓘ
primaryFunction	facilitate rapid transit across Chicago’s central business district ⓘ
runsUnder	Dearborn Street NERFINISHED ⓘ
safetyFeatures	emergency exits ⓘ lighting systems ⓘ ventilation systems ⓘ
serves	commuters ⓘ tourists ⓘ
servesArea	Chicago Loop NERFINISHED ⓘ
serviceType	rapid transit ⓘ
system	Chicago "L" NERFINISHED ⓘ
trackGauge	standard gauge ⓘ
usedBy	Blue Line trains NERFINISHED ⓘ

How these facts were elicited

Referenced by (5)

Full triples — surface form annotated when it differs from this entity's canonical label.

Clark/Lake station (CTA) → hasSubwaySection → Dearborn Subway (Blue Line) ⓘ

Damen → isOnCorridor → Dearborn Subway (Blue Line) ⓘ

this entity surface form: Milwaukee–Dearborn subway / O'Hare branch corridor

Division → partOf → Dearborn Subway (Blue Line) ⓘ

this entity surface form: Milwaukee–Dearborn subway

Grand → partOf → Dearborn Subway (Blue Line) ⓘ

this entity surface form: Milwaukee-Dearborn subway

Forest Park branch → connectsWith → Dearborn Subway (Blue Line) ⓘ