Lock 21
E637899
Lock 21 is one of the numbered canal locks at Merrickville on Canada’s historic Rideau Canal system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Lock 21 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7058266 — 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 21 Context triple: [Merrickville Locks, hasLockNumber, Lock 21]
-
A.
Lock 11 and Weir
Lock 11 and Weir is a historic river navigation structure on the Murray River at Mildura, Australia, known for regulating water levels and enabling boat passage while serving as a popular local tourist attraction.
-
B.
The Lock
The Lock is a celebrated 1824 landscape painting by English Romantic artist John Constable, depicting rural life along the River Stour with dramatic naturalistic detail.
-
C.
Lockout
Lockout is a 2012 science fiction action film starring Guy Pearce as a wrongly convicted ex-CIA agent sent to rescue the U.S. president’s daughter from a violent prison riot in space.
-
D.
Teston Lock
Teston Lock is a navigation lock on the River Medway in Kent, England, used to manage river levels and enable boat passage.
-
E.
The Unlocking
"The Unlocking" is a song by hip hop band The Roots from their influential 1995 album *Do You Want More?!!!??!* that showcases their jazz-rap style and live-instrumentation approach.
- 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 21 Target entity description: Lock 21 is one of the numbered canal locks at Merrickville on Canada’s historic Rideau Canal system.
-
A.
Lock 11 and Weir
Lock 11 and Weir is a historic river navigation structure on the Murray River at Mildura, Australia, known for regulating water levels and enabling boat passage while serving as a popular local tourist attraction.
-
B.
The Lock
The Lock is a celebrated 1824 landscape painting by English Romantic artist John Constable, depicting rural life along the River Stour with dramatic naturalistic detail.
-
C.
Lockout
Lockout is a 2012 science fiction action film starring Guy Pearce as a wrongly convicted ex-CIA agent sent to rescue the U.S. president’s daughter from a violent prison riot in space.
-
D.
Teston Lock
Teston Lock is a navigation lock on the River Medway in Kent, England, used to manage river levels and enable boat passage.
-
E.
The Unlocking
"The Unlocking" is a song by hip hop band The Roots from their influential 1995 album *Do You Want More?!!!??!* that showcases their jazz-rap style and live-instrumentation approach.
- F. None of above. chosen
Statements (26)
| Predicate | Object |
|---|---|
| instanceOf |
canal lock
ⓘ
waterway infrastructure ⓘ |
| category | Locks on the Rideau Canal NERFINISHED ⓘ |
| country | Canada ⓘ |
| hasFunction | raising and lowering vessels between water levels ⓘ |
| hasLockNumber | 21 ⓘ |
| heritageDesignation | UNESCO World Heritage Site ⓘ |
| heritageSystem | Rideau Canal UNESCO World Heritage Site NERFINISHED ⓘ |
| historicalPeriod | 19th century canal era ⓘ |
| isNumberedElementOf | Rideau Canal lock system NERFINISHED ⓘ |
| locatedIn |
Canada
ⓘ
Merrickville, Ontario NERFINISHED ⓘ Ontario ⓘ |
| locatedOnWatercourse | Rideau River NERFINISHED ⓘ |
| maintainedBy | Parks Canada NERFINISHED ⓘ |
| near | village of Merrickville NERFINISHED ⓘ |
| openToPublic | true ⓘ |
| ownedBy | Government of Canada NERFINISHED ⓘ |
| partOf |
Merrickville lockstation
NERFINISHED
ⓘ
Rideau Canal NERFINISHED ⓘ |
| tourismRegion | Eastern Ontario NERFINISHED ⓘ |
| transportInfrastructureType | inland waterway lock ⓘ |
| usedFor |
boat traffic
ⓘ
navigation ⓘ water level control ⓘ |
| waterway | Rideau Canal 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 21 Description of subject: Lock 21 is one of the numbered canal locks at Merrickville on Canada’s historic Rideau Canal system.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.