Metra North Central Service
E425259
Metra North Central Service is a commuter rail line in the Chicago metropolitan area that runs between downtown Chicago and northern suburbs, primarily serving communities along the I-94 and I-294 corridors.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Metra North Central Service canonical | 6 |
| Metra North Central Service (nearby stations) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4241846 — 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: Metra North Central Service Context triple: [North Central Service, branding, Metra North Central Service]
-
A.
Metra SouthWest Service
Metra SouthWest Service is a commuter rail line in the Chicago metropolitan area that connects downtown Chicago with southwestern suburbs including Orland Park, Illinois.
-
B.
Metra Union Pacific North Line
The Metra Union Pacific North Line is a commuter rail line in the Chicago metropolitan area that runs between downtown Chicago and its northern suburbs along the Union Pacific Railroad’s North Line.
-
C.
Metra Rock Island District line
The Metra Rock Island District line is a commuter rail route in the Chicago metropolitan area that connects downtown Chicago with various southwest suburbs, including Tinley Park.
-
D.
Metra
Metra is the commuter rail system serving the Chicago metropolitan area, operating extensive routes that connect the city with its surrounding suburbs.
-
E.
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.
- 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: Metra North Central Service Target entity description: Metra North Central Service is a commuter rail line in the Chicago metropolitan area that runs between downtown Chicago and northern suburbs, primarily serving communities along the I-94 and I-294 corridors.
-
A.
Metra SouthWest Service
Metra SouthWest Service is a commuter rail line in the Chicago metropolitan area that connects downtown Chicago with southwestern suburbs including Orland Park, Illinois.
-
B.
Metra Union Pacific North Line
The Metra Union Pacific North Line is a commuter rail line in the Chicago metropolitan area that runs between downtown Chicago and its northern suburbs along the Union Pacific Railroad’s North Line.
-
C.
Metra Rock Island District line
The Metra Rock Island District line is a commuter rail route in the Chicago metropolitan area that connects downtown Chicago with various southwest suburbs, including Tinley Park.
-
D.
Metra
Metra is the commuter rail system serving the Chicago metropolitan area, operating extensive routes that connect the city with its surrounding suburbs.
-
E.
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.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Metra line
ⓘ
commuter rail line ⓘ |
| connectsTo |
Amtrak services at Chicago Union Station
NERFINISHED
ⓘ
CTA rail network at Chicago Union Station (via walking connections) ⓘ Metra Milwaukee District North Line at Prairie Crossing NERFINISHED ⓘ Metra Milwaukee District West Line at Franklin Park NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| electrification | none ⓘ |
| fareSystem | Metra zone-based fares ⓘ |
| hasStation |
Antioch station
NERFINISHED
ⓘ
Buffalo Grove station NERFINISHED ⓘ O’Hare Transfer station NERFINISHED ⓘ Prairie Crossing (North Central Service) station NERFINISHED ⓘ |
| lineLength | approximately 53 miles ⓘ |
| locale | northern Illinois NERFINISHED ⓘ |
| numberOfStations | 17 ⓘ |
| opened | 1996 ⓘ |
| operator | Metra NERFINISHED ⓘ |
| ownerOfInfrastructure | Metra NERFINISHED ⓘ |
| partOf | Metra commuter rail network NERFINISHED ⓘ |
| peakDirection |
toward Antioch in evening
ⓘ
toward Chicago in morning ⓘ |
| primaryCorridor |
I-294 corridor
NERFINISHED
ⓘ
I-94 corridor ⓘ |
| purpose | serve commuters between northern suburbs and downtown Chicago ⓘ |
| region | Chicago metropolitan area NERFINISHED ⓘ |
| rollingStock |
bi-level commuter coaches
ⓘ
diesel locomotives ⓘ |
| safetySystem | Positive Train Control NERFINISHED ⓘ |
| servesCity | Chicago NERFINISHED ⓘ |
| servesSuburb |
Antioch
NERFINISHED
ⓘ
Buffalo Grove NERFINISHED ⓘ Franklin Park NERFINISHED ⓘ Mundelein NERFINISHED ⓘ O’Hare Transfer NERFINISHED ⓘ Prospect Heights NERFINISHED ⓘ River Grove NERFINISHED ⓘ Rosemont NERFINISHED ⓘ Round Lake Beach NERFINISHED ⓘ Schiller Park NERFINISHED ⓘ Vernon Hills NERFINISHED ⓘ Wheeling NERFINISHED ⓘ |
| serviceType | commuter rail ⓘ |
| state | Illinois ⓘ |
| terminus |
Antioch, Illinois
NERFINISHED
ⓘ
Chicago Union Station NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
| usesTrackOf | Canadian National Railway NERFINISHED ⓘ |
| weekdayService | operates multiple inbound and outbound trains ⓘ |
| weekendService | limited or no service depending on schedule ⓘ |
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: Metra North Central Service Description of subject: Metra North Central Service is a commuter rail line in the Chicago metropolitan area that runs between downtown Chicago and northern suburbs, primarily serving communities along the I-94 and I-294 corridors.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
North Central Service
this entity surface form:
Metra North Central Service (nearby stations)