Illinois Central Railroad main line
E872896
The Illinois Central Railroad main line was a major north–south rail corridor in the central United States, historically linking Chicago with the Gulf of Mexico and serving as a key route for both passenger and freight traffic.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Illinois Central Railroad corridor | 1 |
| Illinois Central Railroad main line canonical | 1 |
| Illinois Central main line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10566840 — 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: Illinois Central Railroad main line Context triple: [Homewood station, formerRailLine, Illinois Central Railroad main line]
-
A.
Rock Island District main line
The Rock Island District main line is a primary Metra commuter rail route in the Chicago area, running between downtown Chicago and its southwestern suburbs.
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B.
Chicago & North Western West Line
The Chicago & North Western West Line was a historic commuter rail route in the Chicago area that later became part of Metra’s Union Pacific West Line.
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C.
Chicago–Omaha main line
The Chicago–Omaha main line was a principal transcontinental rail corridor in the Midwestern United States, linking Chicago with Omaha and serving as a key route for both passenger and freight traffic.
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D.
Chicago–La Grange corridor
The Chicago–La Grange corridor is a key suburban rail route west of Chicago that has long served as a major commuter link between the city and its western suburbs.
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E.
Chicago–St. Louis rail corridor
The Chicago–St. Louis rail corridor is a major Midwestern passenger and freight rail route linking Chicago, Illinois, with St. Louis, Missouri, and serving as a key component of the region’s transportation network.
- 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: Illinois Central Railroad main line Target entity description: The Illinois Central Railroad main line was a major north–south rail corridor in the central United States, historically linking Chicago with the Gulf of Mexico and serving as a key route for both passenger and freight traffic.
-
A.
Rock Island District main line
The Rock Island District main line is a primary Metra commuter rail route in the Chicago area, running between downtown Chicago and its southwestern suburbs.
-
B.
Chicago & North Western West Line
The Chicago & North Western West Line was a historic commuter rail route in the Chicago area that later became part of Metra’s Union Pacific West Line.
-
C.
Chicago–Omaha main line
The Chicago–Omaha main line was a principal transcontinental rail corridor in the Midwestern United States, linking Chicago with Omaha and serving as a key route for both passenger and freight traffic.
-
D.
Chicago–La Grange corridor
The Chicago–La Grange corridor is a key suburban rail route west of Chicago that has long served as a major commuter link between the city and its western suburbs.
-
E.
Chicago–St. Louis rail corridor
The Chicago–St. Louis rail corridor is a major Midwestern passenger and freight rail route linking Chicago, Illinois, with St. Louis, Missouri, and serving as a key component of the region’s transportation network.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
rail corridor
ⓘ
railway line ⓘ |
| builtFor |
bulk freight traffic
ⓘ
long-distance passenger service ⓘ |
| connectsTo |
Chicago, Illinois
NERFINISHED
ⓘ
Gulfport, Mississippi NERFINISHED ⓘ Mobile, Alabama NERFINISHED ⓘ New Orleans, Louisiana NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| direction | north–south ⓘ |
| economicRole |
facilitated movement of Midwestern agricultural products to Gulf ports
ⓘ
supported north–south trade in the central United States ⓘ |
| electrification | not electrified on most segments ⓘ |
| endPoint | Gulf of Mexico NERFINISHED ⓘ |
| heritage |
historically important in development of Chicago as a rail hub
ⓘ
key route in the expansion of rail service to the Gulf Coast ⓘ |
| historicalOperator | Illinois Central Gulf Railroad NERFINISHED ⓘ |
| historicalSignificance | major north–south rail corridor in the central United States ⓘ |
| locatedIn |
Midwestern United States
ⓘ
Southern United States ⓘ |
| notableTrainService |
City of New Orleans
NERFINISHED
ⓘ
Panama Limited NERFINISHED ⓘ |
| openedBy | Illinois Central Railroad NERFINISHED ⓘ |
| operator | Illinois Central Railroad NERFINISHED ⓘ |
| partOf | Illinois Central Railroad network NERFINISHED ⓘ |
| partOfRoute | Chicago–New Orleans rail corridor NERFINISHED ⓘ |
| passesThrough |
Illinois
NERFINISHED
ⓘ
Kentucky NERFINISHED ⓘ Louisiana NERFINISHED ⓘ Mississippi NERFINISHED ⓘ Tennessee NERFINISHED ⓘ |
| servedCity |
Chicago, Illinois
NERFINISHED
ⓘ
Jackson, Mississippi NERFINISHED ⓘ Memphis, Tennessee NERFINISHED ⓘ New Orleans, Louisiana NERFINISHED ⓘ |
| startPoint | Chicago, Illinois NERFINISHED ⓘ |
| status | still in use on major segments ⓘ |
| successorOperator | Canadian National Railway NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
| usedFor |
freight rail transport
ⓘ
passenger rail transport ⓘ |
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: Illinois Central Railroad main line Description of subject: The Illinois Central Railroad main line was a major north–south rail corridor in the central United States, historically linking Chicago with the Gulf of Mexico and serving as a key route for both passenger and freight traffic.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Illinois Central main line
this entity surface form:
Illinois Central Railroad corridor