Port Severn Lock
E659624
Port Severn Lock is a navigation lock on Ontario’s Trent–Severn Waterway that enables boats to bypass rapids and elevation changes at Port Severn.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Port Severn Lock canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7380921 — 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: Port Severn Lock Context triple: [Port Severn, lockName, Port Severn Lock]
-
A.
Gladstone Lock
Gladstone Lock is a major ship lock within the Port of Liverpool that enables large vessels to access the port’s dock system from the River Mersey.
-
B.
Gloucester Lock
Gloucester Lock is a canal lock in the city of Gloucester, England, that connects the Gloucester and Sharpness Canal with the River Severn and manages navigation between them.
-
C.
Sandford Lock
Sandford Lock is a navigation lock on the River Chelmer in Essex, England, used to manage water levels and enable boat passage along the river.
-
D.
Bell Weir Lock
Bell Weir Lock is a lock on the River Thames in England, situated near Egham and used to manage river navigation and water levels.
-
E.
Briton Ferry Lock
Briton Ferry Lock is a historic canal and dock lock in Briton Ferry, Wales, associated with the town’s industrial and maritime heritage.
- 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: Port Severn Lock Target entity description: Port Severn Lock is a navigation lock on Ontario’s Trent–Severn Waterway that enables boats to bypass rapids and elevation changes at Port Severn.
-
A.
Gladstone Lock
Gladstone Lock is a major ship lock within the Port of Liverpool that enables large vessels to access the port’s dock system from the River Mersey.
-
B.
Gloucester Lock
Gloucester Lock is a canal lock in the city of Gloucester, England, that connects the Gloucester and Sharpness Canal with the River Severn and manages navigation between them.
-
C.
Sandford Lock
Sandford Lock is a navigation lock on the River Chelmer in Essex, England, used to manage water levels and enable boat passage along the river.
-
D.
Bell Weir Lock
Bell Weir Lock is a lock on the River Thames in England, situated near Egham and used to manage river navigation and water levels.
-
E.
Briton Ferry Lock
Briton Ferry Lock is a historic canal and dock lock in Briton Ferry, Wales, associated with the town’s industrial and maritime heritage.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
canal lock
ⓘ
navigation lock ⓘ |
| connectsTo | Georgian Bay ⓘ |
| country | Canada ⓘ |
| hasAccess |
boat traffic
ⓘ
small craft ⓘ |
| hasFeature |
chamber
ⓘ
control mechanisms ⓘ gates ⓘ |
| hasFunction |
lower boats
ⓘ
raise boats ⓘ |
| hasInfrastructureType | hydraulic engineering structure ⓘ |
| hasUse |
recreational navigation
ⓘ
tourism ⓘ |
| isPartOf |
Trent–Severn Waterway National Historic Site of Canada
ⓘ
linked to:
Trent–Severn Waterway
|
| locatedIn |
Canada
ⓘ
Ontario ⓘ Port Severn, Ontario ⓘ |
| locatedInAdministrativeEntity | Simcoe County ⓘ |
| locatedNear | Port Severn community ⓘ |
| locatedOnWatercourse | Severn River ⓘ |
| operatedBy | Parks Canada ⓘ |
| ownedBy |
Government of Canada
ⓘ
linked to:
Canadian federal government (Ottawa)
|
| partOf | Trent–Severn Waterway ⓘ |
| purpose |
bypass rapids
ⓘ
overcome elevation changes ⓘ |
| region | Central Ontario ⓘ |
| usedFor |
navigation
ⓘ
recreational boating ⓘ |
| 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: Port Severn Lock Description of subject: Port Severn Lock is a navigation lock on Ontario’s Trent–Severn Waterway that enables boats to bypass rapids and elevation changes at Port Severn.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.