Lock 1 of the Trent–Severn Waterway
E665351
Lock 1 of the Trent–Severn Waterway is the first lock on Ontario’s historic Trent–Severn canal system, situated at the entrance to the Murray Canal and serving as a key control point for vessel navigation between Lake Ontario and the inland waterway network.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Lock 1 of the Trent–Severn Waterway canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7379886 — 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: Lock 1 of the Trent–Severn Waterway Context triple: [Murray Canal, hasLock, Lock 1 of the Trent–Severn Waterway]
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A.
Trent–Severn Waterway Lock 35
Trent–Severn Waterway Lock 35 is one of the numbered canal locks on Canada’s historic Trent–Severn Waterway, facilitating navigation and water level changes along the Trent River.
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B.
Trent–Severn Waterway Lock 33
Trent–Severn Waterway Lock 33 is one of the navigational locks on Ontario’s historic Trent–Severn Waterway, facilitating boat passage and water level management along the Trent River.
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C.
Trent–Severn Waterway Lock 34
Trent–Severn Waterway Lock 34 is one of the numbered canal locks on Canada’s historic Trent–Severn Waterway, facilitating navigation and water level changes along the Trent River.
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D.
Merrickville Locks
Merrickville Locks are a historic set of canal locks in Merrickville, Ontario, that form part of the UNESCO-listed Rideau Canal waterway.
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E.
Bobcaygeon Lock
Bobcaygeon Lock is a historic canal lock in Bobcaygeon, Ontario, that facilitates boat navigation and water level control along Canada’s Trent–Severn Waterway.
- 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: Lock 1 of the Trent–Severn Waterway Target entity description: Lock 1 of the Trent–Severn Waterway is the first lock on Ontario’s historic Trent–Severn canal system, situated at the entrance to the Murray Canal and serving as a key control point for vessel navigation between Lake Ontario and the inland waterway network.
-
A.
Trent–Severn Waterway Lock 35
Trent–Severn Waterway Lock 35 is one of the numbered canal locks on Canada’s historic Trent–Severn Waterway, facilitating navigation and water level changes along the Trent River.
-
B.
Trent–Severn Waterway Lock 33
Trent–Severn Waterway Lock 33 is one of the navigational locks on Ontario’s historic Trent–Severn Waterway, facilitating boat passage and water level management along the Trent River.
-
C.
Trent–Severn Waterway Lock 34
Trent–Severn Waterway Lock 34 is one of the numbered canal locks on Canada’s historic Trent–Severn Waterway, facilitating navigation and water level changes along the Trent River.
-
D.
Merrickville Locks
Merrickville Locks are a historic set of canal locks in Merrickville, Ontario, that form part of the UNESCO-listed Rideau Canal waterway.
-
E.
Bobcaygeon Lock
Bobcaygeon Lock is a historic canal lock in Bobcaygeon, Ontario, that facilitates boat navigation and water level control along Canada’s Trent–Severn Waterway.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
canal lock
ⓘ
navigation lock ⓘ |
| category |
Canal locks in Ontario
ⓘ
Trent–Severn Waterway locks NERFINISHED ⓘ |
| connectsTo |
Lake Ontario
NERFINISHED
ⓘ
inland waterway network of the Trent–Severn Waterway ⓘ |
| country | Canada ⓘ |
| function |
controls water levels for navigation
ⓘ
enables vessels to transit between different water levels ⓘ |
| hasAccess |
pleasure craft
ⓘ
tour boats ⓘ |
| hasRole |
entrance lock to the Trent–Severn Waterway from Lake Ontario
ⓘ
key control point for vessel navigation ⓘ |
| heritageDesignation | part of a National Historic Site of Canada ⓘ |
| heritageSystem | Trent–Severn Waterway National Historic Site of Canada NERFINISHED ⓘ |
| locatedIn |
Bay of Quinte region
NERFINISHED
ⓘ
Murray Canal NERFINISHED ⓘ Ontario ⓘ eastern Lake Ontario area ⓘ |
| locatedInAdministrativeArea |
Canada
NERFINISHED
ⓘ
Province of Ontario NERFINISHED ⓘ |
| operator | Parks Canada NERFINISHED ⓘ |
| partOf |
Murray Canal navigation system
NERFINISHED
ⓘ
Trent–Severn Waterway NERFINISHED ⓘ |
| positionInSystem | first lock on the Trent–Severn Waterway ⓘ |
| startPointOf | Trent–Severn Waterway route from Lake Ontario NERFINISHED ⓘ |
| usedFor |
recreational boating
ⓘ
small commercial vessel navigation ⓘ |
| waterway |
Murray Canal
NERFINISHED
ⓘ
Trent–Severn Waterway NERFINISHED ⓘ |
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: Lock 1 of the Trent–Severn Waterway Description of subject: Lock 1 of the Trent–Severn Waterway is the first lock on Ontario’s historic Trent–Severn canal system, situated at the entrance to the Murray Canal and serving as a key control point for vessel navigation between Lake Ontario and the inland waterway network.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.