Duluth–Superior harbor and estuary system
E246408
The Duluth–Superior harbor and estuary system is a major Great Lakes port complex at the western tip of Lake Superior, encompassing interconnected waterways, wetlands, and industrial facilities that support significant commercial shipping and ecological habitats.
All labels observed (7)
How this entity was disambiguated
This entity first appeared as the object of triple T2206411 — 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: Duluth–Superior harbor and estuary system Context triple: [St. Louis River, partOf, Duluth–Superior harbor and estuary system]
-
A.
Lake of the Woods
Lake of the Woods is a large, island-dotted freshwater lake in northwestern Ontario that extends into Manitoba and Minnesota and is known for its fishing, boating, and scenic wilderness.
-
B.
Milwaukee Harbor
Milwaukee Harbor is a commercial and recreational port area on Lake Michigan serving the city of Milwaukee, Wisconsin.
-
C.
Great Lakes–St. Lawrence system
The Great Lakes–St. Lawrence system is a vast interconnected chain of freshwater lakes and the St. Lawrence River that forms one of the world’s largest inland waterways, linking the interior of North America to the Atlantic Ocean.
-
D.
Lake Calhoun (Bde Maka Ska)
Lake Calhoun (Bde Maka Ska) is the largest lake in Minneapolis, Minnesota, popular for recreation and known for its Dakota name reflecting the area’s Indigenous heritage.
-
E.
Hood Canal
Hood Canal is a long, narrow fjord-like arm of Puget Sound in western Washington known for its scenic shorelines, shellfish beds, and recreational boating and fishing.
- 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: Duluth–Superior harbor and estuary system Target entity description: The Duluth–Superior harbor and estuary system is a major Great Lakes port complex at the western tip of Lake Superior, encompassing interconnected waterways, wetlands, and industrial facilities that support significant commercial shipping and ecological habitats.
-
A.
Lake of the Woods
Lake of the Woods is a large, island-dotted freshwater lake in northwestern Ontario that extends into Manitoba and Minnesota and is known for its fishing, boating, and scenic wilderness.
-
B.
Milwaukee Harbor
Milwaukee Harbor is a commercial and recreational port area on Lake Michigan serving the city of Milwaukee, Wisconsin.
-
C.
Great Lakes–St. Lawrence system
The Great Lakes–St. Lawrence system is a vast interconnected chain of freshwater lakes and the St. Lawrence River that forms one of the world’s largest inland waterways, linking the interior of North America to the Atlantic Ocean.
-
D.
Lake Calhoun (Bde Maka Ska)
Lake Calhoun (Bde Maka Ska) is the largest lake in Minneapolis, Minnesota, popular for recreation and known for its Dakota name reflecting the area’s Indigenous heritage.
-
E.
Hood Canal
Hood Canal is a long, narrow fjord-like arm of Puget Sound in western Washington known for its scenic shorelines, shellfish beds, and recreational boating and fishing.
- F. None of above. chosen
Statements (54)
| Predicate | Object |
|---|---|
| instanceOf |
Great Lakes port
ⓘ
estuary system ⓘ harbor ⓘ port complex ⓘ |
| borderedBy |
Duluth Ship Canal
ⓘ
Superior ⓘ
surface form:
Superior Entry
|
| characterizedBy |
ecologically significant wetlands
ⓘ
industrial facilities ⓘ interconnected waterways ⓘ shipping infrastructure ⓘ |
| connectedTo |
Lake Superior
ⓘ
Nemadji River ⓘ St. Louis River ⓘ |
| hasEcologicalRole |
bird habitat
ⓘ
fish habitat ⓘ nursery habitat for aquatic species ⓘ wetland ecosystem ⓘ |
| hasPart |
Port of Duluth-Superior
ⓘ
surface form:
Duluth-Superior port facilities
St. Louis River ⓘ
surface form:
St. Louis River estuary
breakwaters ⓘ coal docks ⓘ dredged berths ⓘ general cargo docks ⓘ grain terminals ⓘ industrial waterfronts ⓘ intermodal terminals ⓘ navigation structures ⓘ ore docks ⓘ petroleum terminals ⓘ shipping channels ⓘ wetlands ⓘ |
| locatedIn |
Lake Superior watershed
ⓘ
Minnesota ⓘ Wisconsin ⓘ western tip of Lake Superior ⓘ |
| managedBy |
Port of Duluth-Superior
ⓘ
surface form:
Duluth Seaway Port Authority
Superior port authority ⓘ
surface form:
Superior Port and Harbor authorities
|
| partOf |
Great Lakes–St. Lawrence system
ⓘ
surface form:
Great Lakes–St. Lawrence Seaway system
|
| regulatedBy |
U.S. Army Corps of Engineers
ⓘ
United States Coast Guard ⓘ
surface form:
U.S. Coast Guard
state environmental agencies of Minnesota and Wisconsin ⓘ |
| servesCity |
Duluth
ⓘ
surface form:
Duluth, Minnesota
Superior, Wisconsin ⓘ |
| usedFor |
bulk cargo transport
ⓘ
coal shipping ⓘ commercial shipping ⓘ fishing ⓘ general cargo handling ⓘ grain export ⓘ intermodal freight transfer ⓘ iron ore shipping ⓘ petroleum product shipping ⓘ recreational boating ⓘ tourism ⓘ |
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: Duluth–Superior harbor and estuary system Description of subject: The Duluth–Superior harbor and estuary system is a major Great Lakes port complex at the western tip of Lake Superior, encompassing interconnected waterways, wetlands, and industrial facilities that support significant commercial shipping and ecological habitats.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Duluth–Superior Harbor entrance
this entity surface form:
Duluth-Superior Harbor
this entity surface form:
Lake Superior shipping routes
this entity surface form:
Duluth–Superior harbor
this entity surface form:
Duluth–Superior harbor channels
subject surface form:
Superior, Wisconsin
this entity surface form:
Duluth–Superior harbor
this entity surface form:
Duluth–Superior Harbor
this entity surface form:
Duluth–Superior Harbor
this entity surface form:
Duluth–Superior Harbor
this entity surface form:
Duluth–Superior harbor