Bobcaygeon Lock
E178833
Bobcaygeon Lock is a historic canal lock in Bobcaygeon, Ontario, that facilitates boat navigation and water level control along Canada’s Trent–Severn Waterway.
All labels observed (17)
How this entity was disambiguated
This entity first appeared as the object of triple T1479882 — 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: Bobcaygeon Lock Context triple: [Trent–Severn Waterway, hasPart, Bobcaygeon Lock]
-
A.
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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B.
Smiths Falls Locks
Smiths Falls Locks are a historic set of canal locks in Smiths Falls, Ontario, that form a key part of the Rideau Canal’s navigation and heritage infrastructure.
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C.
Swift Rapids Lock
Swift Rapids Lock is a large lock station on Ontario’s Trent–Severn Waterway, notable for its significant lift and remote, scenic setting.
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D.
Kingston Mills Locks
Kingston Mills Locks is a historic lockstation at the southern entrance of Canada’s Rideau Canal, known for its 19th-century engineering works and scenic setting near Kingston, Ontario.
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E.
Burleigh Falls Lock
Burleigh Falls Lock is a canal lock on Ontario’s Trent–Severn Waterway, known for managing navigation and water levels near the scenic Burleigh Falls area.
- 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: Bobcaygeon Lock Target entity description: Bobcaygeon Lock is a historic canal lock in Bobcaygeon, Ontario, that facilitates boat navigation and water level control along Canada’s Trent–Severn Waterway.
-
A.
Merrickville Locks
Merrickville Locks are a historic set of canal locks in Merrickville, Ontario, that form part of the UNESCO-listed Rideau Canal waterway.
-
B.
Smiths Falls Locks
Smiths Falls Locks are a historic set of canal locks in Smiths Falls, Ontario, that form a key part of the Rideau Canal’s navigation and heritage infrastructure.
-
C.
Swift Rapids Lock
Swift Rapids Lock is a large lock station on Ontario’s Trent–Severn Waterway, notable for its significant lift and remote, scenic setting.
-
D.
Kingston Mills Locks
Kingston Mills Locks is a historic lockstation at the southern entrance of Canada’s Rideau Canal, known for its 19th-century engineering works and scenic setting near Kingston, Ontario.
-
E.
Burleigh Falls Lock
Burleigh Falls Lock is a canal lock on Ontario’s Trent–Severn Waterway, known for managing navigation and water levels near the scenic Burleigh Falls area.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
canal lock
ⓘ
historic site ⓘ |
| access | public ⓘ |
| category |
Locks on the Trent–Severn Waterway
ⓘ
Tourist attractions in Kawartha Lakes ⓘ Transport infrastructure in Ontario ⓘ |
| country | Canada ⓘ |
| hasNearbySettlement |
Bobcaygeon, Ontario, Canada
ⓘ
surface form:
Bobcaygeon
|
| hasPurpose |
facilitate through-navigation on Trent–Severn Waterway
ⓘ
manage water levels between connected reaches ⓘ |
| hasSignificance |
supports local tourism economy
ⓘ
supports regional navigation network ⓘ |
| hasStructureType | navigation lock ⓘ |
| heritageDesignation | historic canal lock ⓘ |
| isComponentOf |
Trent–Severn Waterway
ⓘ
surface form:
Trent–Severn canal system
|
| isLocatedInRegion | Kawartha Lakes region ⓘ |
| isTouristAttractionIn |
Bobcaygeon, Ontario, Canada
ⓘ
surface form:
Bobcaygeon, Ontario
|
| locatedIn | Bobcaygeon, Ontario, Canada ⓘ |
| locatedInAdministrativeArea | City of Kawartha Lakes ⓘ |
| locatedInProvince | Ontario ⓘ |
| locatedOnWaterBody | Trent River–Severn River system ⓘ |
| operatedBy | Parks Canada ⓘ |
| partOf | Trent–Severn Waterway ⓘ |
| primaryFunction |
boat navigation
ⓘ
water level control ⓘ |
| seasonalUse | navigation season ⓘ |
| serves |
recreational boating
ⓘ
tourism ⓘ |
| usedFor | passage of boats between different water levels ⓘ |
| waterway | Trent–Severn 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: Bobcaygeon Lock Description of subject: Bobcaygeon Lock is a historic canal lock in Bobcaygeon, Ontario, that facilitates boat navigation and water level control along Canada’s Trent–Severn Waterway.
Referenced by (17)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Trent–Severn Waterway Lock 1
this entity surface form:
Trent–Severn Waterway Lock 18
this entity surface form:
Trent–Severn Waterway Lock 19
this entity surface form:
Trent–Severn Waterway Lock 20
this entity surface form:
Trent–Severn Waterway Lock 21
this entity surface form:
Trent–Severn Waterway Lock 22
this entity surface form:
Trent–Severn Waterway Lock 23
this entity surface form:
Trent–Severn Waterway Lock 24
this entity surface form:
Trent–Severn Waterway Lock 25
this entity surface form:
Trent–Severn Waterway Lock 26
this entity surface form:
Trent–Severn Waterway Lock 27
this entity surface form:
Trent–Severn Waterway Lock 28
this entity surface form:
Trent–Severn Waterway Lock 29
this entity surface form:
Trent–Severn Waterway Lock 30
this entity surface form:
Trent–Severn Waterway Lock 31
this entity surface form:
Trent–Severn Waterway Lock 32