Ravenswood Line
E366587
The Ravenswood Line is the historical name for what is now known as the Chicago Transit Authority's Brown Line, an elevated rapid transit route serving Chicago's North Side.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ravenswood Line canonical | 2 |
| Ravenswood route of CTA | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3556873 — 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: Ravenswood Line Context triple: [CTA Brown Line, originalServiceName, Ravenswood Line]
-
A.
Dyre Avenue Line
The Dyre Avenue Line is a New York City Subway line in the Bronx operated by the IRT division, primarily serving the 5 train along a former New York, Westchester and Boston Railway right-of-way.
-
B.
Archer Avenue Line
The Archer Avenue Line is a New York City Subway line in Queens that serves as a southeastern extension of the IND/BMT system, providing service to Jamaica Center and surrounding neighborhoods.
-
C.
Myrtle Avenue Line
The Myrtle Avenue Line is a New York City Subway line in Brooklyn and Queens, primarily served by the M train.
-
D.
Blue Line
The Blue Line is one of the main lines of the Lisbon Metro system, serving key central and northern areas of Portugal’s capital city.
-
E.
Blue Line
The Blue Line is one of the primary routes of the MetroLink light rail system serving the St. Louis metropolitan area.
- 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: Ravenswood Line Target entity description: The Ravenswood Line is the historical name for what is now known as the Chicago Transit Authority's Brown Line, an elevated rapid transit route serving Chicago's North Side.
-
A.
Dyre Avenue Line
The Dyre Avenue Line is a New York City Subway line in the Bronx operated by the IRT division, primarily serving the 5 train along a former New York, Westchester and Boston Railway right-of-way.
-
B.
Archer Avenue Line
The Archer Avenue Line is a New York City Subway line in Queens that serves as a southeastern extension of the IND/BMT system, providing service to Jamaica Center and surrounding neighborhoods.
-
C.
Myrtle Avenue Line
The Myrtle Avenue Line is a New York City Subway line in Brooklyn and Queens, primarily served by the M train.
-
D.
Blue Line
The Blue Line is one of the main lines of the Lisbon Metro system, serving key central and northern areas of Portugal’s capital city.
-
E.
Blue Line
The Blue Line is one of the primary routes of the MetroLink light rail system serving the St. Louis metropolitan area.
- F. None of above. chosen
Statements (35)
| Predicate | Object |
|---|---|
| instanceOf |
elevated railway line
ⓘ
rapid transit line ⓘ |
| city |
Chicago
ⓘ
linked to:
Chicago, Illinois, United States
|
| connectsTo |
Loop elevated
ⓘ
Purple Line ⓘ Red Line ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| electrification | third rail ⓘ |
| fareCollection |
barrier-controlled stations
ⓘ
proof-of-payment not used ⓘ |
| fareSystem | Chicago Transit Authority fare system ⓘ |
| formerNameOf | Brown Line ⓘ |
| historicalNameOf |
Chicago Transit Authority Brown Line
ⓘ
linked to:
CTA Brown Line
|
| historicalStatus | renamed as Brown Line ⓘ |
| lineColor | brown ⓘ |
| locatedIn |
Cook County, Illinois
ⓘ
Illinois ⓘ |
| modeOfTransport | rail ⓘ |
| openingDate | early 20th century ⓘ |
| operator | Chicago Transit Authority ⓘ |
| ownedBy | Chicago Transit Authority ⓘ |
| partOf | Chicago "L" ⓘ |
| platformConfiguration | high-level platforms ⓘ |
| region | Midwestern United States ⓘ |
| rollingStockType | electric multiple units ⓘ |
| servedArea |
North Side, Chicago
ⓘ
linked to:
North Side of Chicago
|
| servedCity | Chicago ⓘ |
| servedCorridor | Ravenswood corridor ⓘ |
| servedFunction |
commuter transport
ⓘ
local passenger service ⓘ |
| serviceType |
rapid transit
ⓘ
urban rail ⓘ |
| successor | Brown Line ⓘ |
| trackGauge | standard gauge ⓘ |
| transitSystem |
Chicago Transit Authority rail system
ⓘ
linked to:
CTA rail network
|
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: Ravenswood Line Description of subject: The Ravenswood Line is the historical name for what is now known as the Chicago Transit Authority's Brown Line, an elevated rapid transit route serving Chicago's North Side.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.