Norfolk Southern trackage in Indiana and Illinois
E401128
Norfolk Southern trackage in Indiana and Illinois is a segment of the freight railroad’s Midwestern rail network that also hosts intercity passenger services such as Amtrak’s Wolverine route.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Norfolk Southern Midwestern rail network | 1 |
| Norfolk Southern trackage in Indiana and Illinois canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3942390 — 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: Norfolk Southern trackage in Indiana and Illinois Context triple: [Amtrak Wolverine service, usesLine, Norfolk Southern trackage in Indiana and Illinois]
-
A.
Norfolk Southern Southern Tier Line
The Norfolk Southern Southern Tier Line is a freight rail corridor in New York State that also hosts Metro-North’s Port Jervis Line commuter service.
-
B.
Chicago, Indianapolis and Louisville Railway
The Chicago, Indianapolis and Louisville Railway, commonly known as the Monon Railroad, was a regional railroad that connected key Midwestern cities and played a significant role in the transportation network of Indiana and surrounding states in the late 19th and early 20th centuries.
-
C.
Illinois Central Railroad
The Illinois Central Railroad was a major American rail carrier that played a pivotal role in connecting the Midwest to the Gulf of Mexico and fostering economic development along its north–south route.
-
D.
Louisville and Nashville Railroad
The Louisville and Nashville Railroad was a major U.S. railroad company that operated across the southeastern United States from the 19th century into the late 20th century, playing a key role in regional freight and passenger transportation.
-
E.
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.
- 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: Norfolk Southern trackage in Indiana and Illinois Target entity description: Norfolk Southern trackage in Indiana and Illinois is a segment of the freight railroad’s Midwestern rail network that also hosts intercity passenger services such as Amtrak’s Wolverine route.
-
A.
Norfolk Southern Southern Tier Line
The Norfolk Southern Southern Tier Line is a freight rail corridor in New York State that also hosts Metro-North’s Port Jervis Line commuter service.
-
B.
Chicago, Indianapolis and Louisville Railway
The Chicago, Indianapolis and Louisville Railway, commonly known as the Monon Railroad, was a regional railroad that connected key Midwestern cities and played a significant role in the transportation network of Indiana and surrounding states in the late 19th and early 20th centuries.
-
C.
Illinois Central Railroad
The Illinois Central Railroad was a major American rail carrier that played a pivotal role in connecting the Midwest to the Gulf of Mexico and fostering economic development along its north–south route.
-
D.
Louisville and Nashville Railroad
The Louisville and Nashville Railroad was a major U.S. railroad company that operated across the southeastern United States from the 19th century into the late 20th century, playing a key role in regional freight and passenger transportation.
-
E.
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.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
freight railroad corridor
ⓘ
railway infrastructure network segment ⓘ |
| connectsWith |
rail network in Michigan
ⓘ
rail network in Ohio ⓘ rail network in the Chicago region ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | non‑electrified ⓘ |
| hasRightOfWayHolder | Norfolk Southern Railway ⓘ |
| hostsService |
Amtrak Wolverine service
ⓘ
surface form:
Amtrak Wolverine
|
| interoperatesWith | Amtrak ⓘ |
| locatedIn |
Illinois
ⓘ
Indiana ⓘ |
| operator | Norfolk Southern Railway ⓘ |
| owner | Norfolk Southern Railway ⓘ |
| partOf |
Norfolk Southern trackage in Indiana and Illinois
self-linksurface differs
ⓘ
surface form:
Norfolk Southern Midwestern rail network
Norfolk Southern Railway ⓘ
surface form:
Norfolk Southern Railway network
|
| primaryUse | through freight traffic ⓘ |
| railGauge | standard gauge ⓘ |
| railroadClass | Class I railroad infrastructure ⓘ |
| region | Midwestern United States ⓘ |
| regulatoryJurisdiction | Federal Railroad Administration ⓘ |
| secondaryUse | Amtrak passenger operations ⓘ |
| trackType | heavy rail ⓘ |
| usedFor |
freight rail transportation
ⓘ
intercity passenger rail transportation ⓘ |
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: Norfolk Southern trackage in Indiana and Illinois Description of subject: Norfolk Southern trackage in Indiana and Illinois is a segment of the freight railroad’s Midwestern rail network that also hosts intercity passenger services such as Amtrak’s Wolverine route.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
Norfolk Southern trackage in Indiana and Illinois
→
partOf
→
Norfolk Southern trackage in Indiana and Illinois
self-linksurface differs
ⓘ
this entity surface form:
Norfolk Southern Midwestern rail network