Sandford Lock
E612462
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sandford Lock canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6657761 — 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: Sandford Lock Context triple: [River Chelmer, hasStructure, Sandford Lock]
-
A.
Saltersford Lock
Saltersford Lock is a navigation lock on the River Weaver in Cheshire, England, used to manage water levels and enable boat passage along the river.
-
B.
Allington Lock
Allington Lock is a key navigation and flood-control lock on the River Medway in Kent, England, marking the tidal limit of the river.
-
C.
Hertford Lock
Hertford Lock is a navigation lock on the River Lea in Hertfordshire, England, used to manage water levels and enable boat passage along the waterway.
-
D.
Thorne Lock
Thorne Lock is a canal lock on the Sheffield and South Yorkshire Navigation in South Yorkshire, England, used to raise and lower boats between different water levels.
-
E.
Eastham Lock
Eastham Lock is a major lock complex at the entrance of the Manchester Ship Canal near the River Mersey, enabling sea-going vessels to access the inland 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: Sandford Lock Target entity description: 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.
-
A.
Saltersford Lock
Saltersford Lock is a navigation lock on the River Weaver in Cheshire, England, used to manage water levels and enable boat passage along the river.
-
B.
Allington Lock
Allington Lock is a key navigation and flood-control lock on the River Medway in Kent, England, marking the tidal limit of the river.
-
C.
Hertford Lock
Hertford Lock is a navigation lock on the River Lea in Hertfordshire, England, used to manage water levels and enable boat passage along the waterway.
-
D.
Thorne Lock
Thorne Lock is a canal lock on the Sheffield and South Yorkshire Navigation in South Yorkshire, England, used to raise and lower boats between different water levels.
-
E.
Eastham Lock
Eastham Lock is a major lock complex at the entrance of the Manchester Ship Canal near the River Mersey, enabling sea-going vessels to access the inland waterway.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
lock on river
ⓘ
navigation lock ⓘ |
| country | United Kingdom ⓘ |
| hasAccess |
by boat
ⓘ
by riverside path ⓘ |
| hasFunction |
flood control
ⓘ
navigation ⓘ |
| hasInfrastructureType | inland waterway lock ⓘ |
| hasRegion | East of England ⓘ |
| hasStructureType |
gates
ⓘ
lock chamber ⓘ weir (adjacent or associated) ⓘ |
| isPartOf |
River Chelmer navigation route
ⓘ
linked to:
Chelmer and Blackwater Navigation
|
| locatedIn |
England
ⓘ
Essex ⓘ |
| locatedNear | Chelmsford ⓘ |
| locatedOnWaterway | River Chelmer ⓘ |
| partOf | Chelmer navigation system ⓘ |
| supports |
recreational boating
ⓘ
small craft navigation ⓘ |
| usedFor |
enabling boat passage
ⓘ
managing water levels ⓘ |
| watercourse | River Chelmer ⓘ |
| waterManagementRole |
controlling flow on River Chelmer
ⓘ
regulating river level for navigation ⓘ |
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: Sandford Lock Description of subject: 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.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
River Chelmer (via nearby junctions and structures)