Calumet-Sag Channel (via Illinois Waterway system)
E361417
The Calumet-Sag Channel is a man-made waterway in northeastern Illinois that links the Calumet River system to the Des Plaines River as part of the larger Illinois Waterway navigation network.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Calumet-Sag Channel (via Illinois Waterway system) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3472447 — 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: Calumet-Sag Channel (via Illinois Waterway system) Context triple: [Chicago Sanitary and Ship Canal, connectsTo, Calumet-Sag Channel (via Illinois Waterway system)]
-
A.
Illinois Waterway system
The Illinois Waterway system is a network of rivers, canals, and locks in Illinois that provides a vital navigable link between the Great Lakes and the Mississippi River.
-
B.
Inland Waterway (Michigan)
Inland Waterway (Michigan) is a connected chain of rivers and lakes in northern Michigan popular for boating, fishing, and scenic recreation.
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C.
Chicago Sanitary and Ship Canal
The Chicago Sanitary and Ship Canal is a man-made waterway in Illinois that reverses the flow of the Chicago River, diverts wastewater away from Lake Michigan, and serves as a key navigation link between the Great Lakes and the Mississippi River system.
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D.
Chicago Harbors system
The Chicago Harbors system is a network of public harbors and marinas along Chicago’s Lake Michigan shoreline that provides docking, mooring, and boating services.
-
E.
Indiana Central Canal
The Indiana Central Canal is a historic 19th-century waterway in Indiana, now largely preserved as an urban waterfront and recreational trail, especially through downtown Indianapolis.
- 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: Calumet-Sag Channel (via Illinois Waterway system) Target entity description: The Calumet-Sag Channel is a man-made waterway in northeastern Illinois that links the Calumet River system to the Des Plaines River as part of the larger Illinois Waterway navigation network.
-
A.
Illinois Waterway system
The Illinois Waterway system is a network of rivers, canals, and locks in Illinois that provides a vital navigable link between the Great Lakes and the Mississippi River.
-
B.
Inland Waterway (Michigan)
Inland Waterway (Michigan) is a connected chain of rivers and lakes in northern Michigan popular for boating, fishing, and scenic recreation.
-
C.
Chicago Sanitary and Ship Canal
The Chicago Sanitary and Ship Canal is a man-made waterway in Illinois that reverses the flow of the Chicago River, diverts wastewater away from Lake Michigan, and serves as a key navigation link between the Great Lakes and the Mississippi River system.
-
D.
Chicago Harbors system
The Chicago Harbors system is a network of public harbors and marinas along Chicago’s Lake Michigan shoreline that provides docking, mooring, and boating services.
-
E.
Indiana Central Canal
The Indiana Central Canal is a historic 19th-century waterway in Indiana, now largely preserved as an urban waterfront and recreational trail, especially through downtown Indianapolis.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
canal
ⓘ
man-made waterway ⓘ |
| alsoKnownAs |
Cal-Sag
ⓘ
Cal-Sag Channel ⓘ |
| connectsWith |
Calumet River
ⓘ
Chicago Sanitary and Ship Canal ⓘ Des Plaines River ⓘ Calumet River ⓘ
surface form:
Little Calumet River
|
| constructionStart | 1911 ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| environmentalIssue |
industrial pollution
ⓘ
invasive aquatic species ⓘ sediment contamination ⓘ |
| flowsThrough |
Alsip, Illinois
ⓘ
Blue Island, Illinois NERFINISHED ⓘ Lemont, Illinois ⓘ Palos Hills, Illinois NERFINISHED ⓘ Worth, Illinois ⓘ |
| function |
forms part of navigation route between Great Lakes and Mississippi River
ⓘ
links Calumet River system to Des Plaines River ⓘ |
| hasFeature |
fixed bridges
ⓘ
levees ⓘ lift bridges ⓘ locks and dams ⓘ |
| length | approximately 16 miles ⓘ |
| locatedIn |
Cook County, Illinois
ⓘ
Illinois ⓘ Northeastern Illinois ⓘ
surface form:
northeastern Illinois
|
| locatedNear | Chicago metropolitan area ⓘ |
| maintainedFor | 9-foot navigation channel depth (Illinois Waterway standard) ⓘ |
| managedBy | U.S. Army Corps of Engineers ⓘ |
| nearbyInfrastructure |
Calumet Expressway
ⓘ
surface form:
Calumet Expressway (Illinois Route 83)
Interstate 294 ⓘ Metra ⓘ
surface form:
Metra commuter rail lines
|
| opened | 1922 ⓘ |
| orientation | east–west ⓘ |
| partOf |
Illinois River
ⓘ
surface form:
Illinois River basin
Illinois Waterway system ⓘ
surface form:
Illinois Waterway
Mississippi River basin ⓘ
surface form:
Mississippi River watershed
|
| region | Midwestern United States ⓘ |
| use |
barge traffic
ⓘ
commercial navigation ⓘ drainage ⓘ flood control ⓘ industrial shipping ⓘ recreation ⓘ |
| waterwaySystem | Illinois Waterway system ⓘ |
| waterwayType | navigation canal ⓘ |
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: Calumet-Sag Channel (via Illinois Waterway system) Description of subject: The Calumet-Sag Channel is a man-made waterway in northeastern Illinois that links the Calumet River system to the Des Plaines River as part of the larger Illinois Waterway navigation network.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.