Portage Canal
E949305
Portage Canal is a man-made waterway in Michigan’s Keweenaw Peninsula that provides a navigable connection between Portage Lake and Lake Superior, historically important for regional shipping and mining.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Portage Canal canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T11845531 — 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: Portage Canal Context triple: [Portage Lake (Michigan), connectedBy, Portage Canal]
-
A.
Champlain Canal
The Champlain Canal is a historic waterway in New York State that links the Hudson River to Lake Champlain, forming part of the state's inland navigation system.
-
B.
Blackstone Canal
The Blackstone Canal is a historic 19th-century waterway in the northeastern United States that played a key role in early industrial transportation and the development of mill towns in the Blackstone Valley.
-
C.
Erie Canal
The Erie Canal is a historic man-made waterway in New York State that opened in 1825, linking the Great Lakes to the Atlantic Ocean and transforming U.S. commerce and westward expansion.
-
D.
Indiana Harbor and Ship Canal
Indiana Harbor and Ship Canal is a major industrial waterway in northwest Indiana that serves as a key shipping and steel-production hub on the southern shore of Lake Michigan.
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E.
Cayuga–Seneca Canal
The Cayuga–Seneca Canal is a navigable waterway in upstate New York that links Cayuga and Seneca Lakes to the Erie Canal, facilitating regional transportation and recreation.
- 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: Portage Canal Target entity description: Portage Canal is a man-made waterway in Michigan’s Keweenaw Peninsula that provides a navigable connection between Portage Lake and Lake Superior, historically important for regional shipping and mining.
-
A.
Champlain Canal
The Champlain Canal is a historic waterway in New York State that links the Hudson River to Lake Champlain, forming part of the state's inland navigation system.
-
B.
Blackstone Canal
The Blackstone Canal is a historic 19th-century waterway in the northeastern United States that played a key role in early industrial transportation and the development of mill towns in the Blackstone Valley.
-
C.
Erie Canal
The Erie Canal is a historic man-made waterway in New York State that opened in 1825, linking the Great Lakes to the Atlantic Ocean and transforming U.S. commerce and westward expansion.
-
D.
Indiana Harbor and Ship Canal
Indiana Harbor and Ship Canal is a major industrial waterway in northwest Indiana that serves as a key shipping and steel-production hub on the southern shore of Lake Michigan.
-
E.
Cayuga–Seneca Canal
The Cayuga–Seneca Canal is a navigable waterway in upstate New York that links Cayuga and Seneca Lakes to the Erie Canal, facilitating regional transportation and recreation.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
canal
ⓘ
man-made waterway ⓘ |
| connectsWaterBody |
Lake Superior
NERFINISHED
ⓘ
Portage Lake NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| crosses | Keweenaw Peninsula NERFINISHED ⓘ |
| hasEconomicRole |
facilitating ore transport
ⓘ
supporting regional trade ⓘ |
| hasFunction |
access to mining areas
ⓘ
navigation ⓘ shipping route ⓘ |
| hasImportance | key transportation corridor in Keweenaw Peninsula ⓘ |
| historicalSignificance |
copper mining industry support
ⓘ
regional shipping ⓘ |
| locatedIn |
Keweenaw Peninsula
NERFINISHED
ⓘ
Michigan NERFINISHED ⓘ United States of America ⓘ
surface form:
United States
|
| locatedOn | Keweenaw Waterway NERFINISHED ⓘ |
| nearCity |
Hancock, Michigan
NERFINISHED
ⓘ
Houghton, Michigan NERFINISHED ⓘ |
| partOf |
Great Lakes waterway system
NERFINISHED
ⓘ
Keweenaw Waterway NERFINISHED ⓘ |
| region | Upper Peninsula of Michigan NERFINISHED ⓘ |
| state |
Michigan (most of state)
ⓘ
surface form:
Michigan
|
| usedFor |
commercial transport
ⓘ
recreational boating ⓘ |
| waterBody |
Lake Superior
NERFINISHED
ⓘ
Portage Lake NERFINISHED ⓘ |
| waterwayType | ship 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: Portage Canal Description of subject: Portage Canal is a man-made waterway in Michigan’s Keweenaw Peninsula that provides a navigable connection between Portage Lake and Lake Superior, historically important for regional shipping and mining.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.