Trent–Severn Waterway
E30926
The Trent–Severn Waterway is a historic Canadian canal system in Ontario that links Lake Ontario to Georgian Bay through a chain of rivers, lakes, and locks, and is now a popular recreational boating route.
All labels observed (12)
How this entity was disambiguated
This entity first appeared as the object of triple T175059 — 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: Trent–Severn Waterway Context triple: [Ontario, containsLandmark, Trent–Severn Waterway]
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A.
Rideau Canal
The Rideau Canal is a historic waterway in Ontario and Quebec, Canada, renowned as a UNESCO World Heritage Site and one of the oldest continuously operated canals in North America.
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B.
Humber River
The Humber River is a significant waterway in Toronto, Ontario, flowing through the city into Lake Ontario and serving as an important natural, recreational, and historical corridor.
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C.
Sault Ste. Marie Canal
The Sault Ste. Marie Canal is a historic Canadian lock and canal system in Sault Ste. Marie, Ontario, that once formed a key part of Great Lakes shipping and is now a National Historic Site.
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D.
Saint Lawrence River
The Saint Lawrence River is a major North American waterway that connects the Great Lakes to the Atlantic Ocean and serves as a vital commercial and cultural corridor for Canada and the United States.
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E.
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.
- 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: Trent–Severn Waterway Target entity description: The Trent–Severn Waterway is a historic Canadian canal system in Ontario that links Lake Ontario to Georgian Bay through a chain of rivers, lakes, and locks, and is now a popular recreational boating route.
-
A.
Rideau Canal
The Rideau Canal is a historic waterway in Ontario and Quebec, Canada, renowned as a UNESCO World Heritage Site and one of the oldest continuously operated canals in North America.
-
B.
Humber River
The Humber River is a significant waterway in Toronto, Ontario, flowing through the city into Lake Ontario and serving as an important natural, recreational, and historical corridor.
-
C.
Sault Ste. Marie Canal
The Sault Ste. Marie Canal is a historic Canadian lock and canal system in Sault Ste. Marie, Ontario, that once formed a key part of Great Lakes shipping and is now a National Historic Site.
-
D.
Saint Lawrence River
The Saint Lawrence River is a major North American waterway that connects the Great Lakes to the Atlantic Ocean and serves as a vital commercial and cultural corridor for Canada and the United States.
-
E.
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.
- F. None of above. chosen
Statements (52)
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: Trent–Severn Waterway Description of subject: The Trent–Severn Waterway is a historic Canadian canal system in Ontario that links Lake Ontario to Georgian Bay through a chain of rivers, lakes, and locks, and is now a popular recreational boating route.
Referenced by (51)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Pigeon Lake (Kawartha Lakes)