Trent River–Severn River system
E675542
The Trent River–Severn River system is a major interconnected waterway in Ontario, Canada, forming part of the Trent–Severn Waterway that links Lake Ontario to Georgian Bay through a series of rivers, lakes, and locks.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Trent River system | 1 |
| Trent River–Severn River system canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7562788 — 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 River–Severn River system Context triple: [Bobcaygeon Lock, locatedOnWaterBody, Trent River–Severn River system]
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A.
Ottawa River
The Ottawa River is a major waterway in eastern Canada that forms much of the border between Ontario and Quebec and is a key tributary of the Saint Lawrence River.
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B.
Ottawa River watershed
The Ottawa River watershed is the drainage basin that collects and channels water from a vast area of eastern Ontario and western Quebec into the Ottawa River, influencing regional ecosystems, water resources, and communities.
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C.
Rideau River
The Rideau River is a major waterway in Eastern Ontario, Canada, flowing through the city of Ottawa and forming part of the historic Rideau Canal system.
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D.
Montreal River
The Montreal River is a river in northeastern Ontario, Canada, that flows through forested and sparsely populated areas before emptying into Lake Timiskaming.
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E.
Montreal River
The Montreal River is a waterway in the Upper Peninsula of Michigan that forms part of the boundary between Michigan and Wisconsin before flowing into Lake Superior.
- 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 River–Severn River system Target entity description: The Trent River–Severn River system is a major interconnected waterway in Ontario, Canada, forming part of the Trent–Severn Waterway that links Lake Ontario to Georgian Bay through a series of rivers, lakes, and locks.
-
A.
Ottawa River
The Ottawa River is a major waterway in eastern Canada that forms much of the border between Ontario and Quebec and is a key tributary of the Saint Lawrence River.
-
B.
Ottawa River watershed
The Ottawa River watershed is the drainage basin that collects and channels water from a vast area of eastern Ontario and western Quebec into the Ottawa River, influencing regional ecosystems, water resources, and communities.
-
C.
Rideau River
The Rideau River is a major waterway in Eastern Ontario, Canada, flowing through the city of Ottawa and forming part of the historic Rideau Canal system.
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D.
Montreal River
The Montreal River is a river in northeastern Ontario, Canada, that flows through forested and sparsely populated areas before emptying into Lake Timiskaming.
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E.
Montreal River
The Montreal River is a waterway in the Upper Peninsula of Michigan that forms part of the boundary between Michigan and Wisconsin before flowing into Lake Superior.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
hydrological system
ⓘ
river system ⓘ waterway ⓘ |
| basinCountry | Canada ⓘ |
| connects |
Georgian Bay
NERFINISHED
ⓘ
Lake Ontario NERFINISHED ⓘ |
| connectsVia |
canalized channels
ⓘ
series of locks ⓘ |
| contains |
Severn River
NERFINISHED
ⓘ
Trent River NERFINISHED ⓘ |
| country | Canada ⓘ |
| drainageBasin | Great Lakes Basin NERFINISHED ⓘ |
| flowsThrough |
Kawartha Lakes
NERFINISHED
ⓘ
Lake Couchiching NERFINISHED ⓘ Lake Simcoe NERFINISHED ⓘ Rice Lake NERFINISHED ⓘ |
| hasComponent |
canals
ⓘ
lakes ⓘ locks ⓘ rivers ⓘ |
| hasJurisdiction |
Province of Ontario
NERFINISHED
ⓘ
federal government of Canada NERFINISHED ⓘ |
| isPartOf | Great Lakes–St. Lawrence waterway network NERFINISHED ⓘ |
| locatedIn |
Kawartha Lakes region
NERFINISHED
ⓘ
Muskoka region NERFINISHED ⓘ Ontario ⓘ Peterborough County NERFINISHED ⓘ Simcoe County NERFINISHED ⓘ |
| managedBy | Parks Canada NERFINISHED ⓘ |
| navigationSeason | summer ⓘ |
| partOf |
Canadian Heritage canals network
NERFINISHED
ⓘ
Trent–Severn Waterway NERFINISHED ⓘ |
| primaryFunction | link Lake Ontario to Georgian Bay ⓘ |
| region | Central Ontario NERFINISHED ⓘ |
| supports |
cottage tourism
ⓘ
small craft navigation ⓘ sport fishing ⓘ |
| terminus |
Georgian Bay
NERFINISHED
ⓘ
Lake Ontario NERFINISHED ⓘ |
| usedFor |
boating
ⓘ
navigation ⓘ recreation ⓘ tourism ⓘ |
| waterwayType | inland waterway ⓘ |
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 River–Severn River system Description of subject: The Trent River–Severn River system is a major interconnected waterway in Ontario, Canada, forming part of the Trent–Severn Waterway that links Lake Ontario to Georgian Bay through a series of rivers, lakes, and locks.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Trent River system