Hayward Lake
E1041562
Hayward Lake is a man-made reservoir in British Columbia, Canada, created by the damming of the Stave River and used for hydroelectric power generation and recreation.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Hayward Lake canonical | 3 |
| Hayward Lake Reservoir Park | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13460180 — 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: Hayward Lake Context triple: [Stave River, hasReservoir, Hayward Lake]
-
A.
East Lake
East Lake is a high-elevation volcanic lake within the Newberry Caldera in central Oregon, known for its scenic setting and recreational fishing and boating.
-
B.
East Lake
East Lake is a vast scenic freshwater lake and popular recreational area in Wuhan, China, known for its gardens, walking paths, and cultural attractions.
-
C.
Lake Hayward
Lake Hayward is a scenic freshwater lake in Colchester, Connecticut, known for its recreational opportunities and surrounding seasonal cottage community.
-
D.
Spreckels Lake
Spreckels Lake is a man-made model yacht and boating lake located within San Francisco’s Golden Gate Park.
-
E.
Reseda Park Lake
Reseda Park Lake is a small urban lake in Reseda, Los Angeles, known for recreation, fishing, and wildlife viewing within Reseda Park.
- 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: Hayward Lake Target entity description: Hayward Lake is a man-made reservoir in British Columbia, Canada, created by the damming of the Stave River and used for hydroelectric power generation and recreation.
-
A.
East Lake
East Lake is a high-elevation volcanic lake within the Newberry Caldera in central Oregon, known for its scenic setting and recreational fishing and boating.
-
B.
East Lake
East Lake is a vast scenic freshwater lake and popular recreational area in Wuhan, China, known for its gardens, walking paths, and cultural attractions.
-
C.
Lake Hayward
Lake Hayward is a scenic freshwater lake in Colchester, Connecticut, known for its recreational opportunities and surrounding seasonal cottage community.
-
D.
Spreckels Lake
Spreckels Lake is a man-made model yacht and boating lake located within San Francisco’s Golden Gate Park.
-
E.
Reseda Park Lake
Reseda Park Lake is a small urban lake in Reseda, Los Angeles, known for recreation, fishing, and wildlife viewing within Reseda Park.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
man-made lake
ⓘ
reservoir ⓘ |
| basinCountry | Canada ⓘ |
| category |
Lakes of British Columbia
ⓘ
Reservoirs in Canada ⓘ |
| country | Canada ⓘ |
| createdBy | damming of the Stave River ⓘ |
| formedByRiver | Stave River ⓘ |
| hasEcosystemType |
reservoir aquatic ecosystem
ⓘ
temperate rainforest shoreline ⓘ |
| hasFacility |
Hayward Lake Reservoir Park
ⓘ
linked to:
Hayward Lake
beach area ⓘ boat launch ⓘ day-use area ⓘ trails ⓘ |
| hasFeature |
floating safety booms
ⓘ
forested shoreline ⓘ interpretive signage ⓘ sandy beach ⓘ |
| hasRecreationalActivity |
canoeing
ⓘ
fishing ⓘ hiking ⓘ kayaking ⓘ picnicking ⓘ stand-up paddleboarding ⓘ swimming ⓘ wildlife viewing ⓘ |
| hasRestriction |
no gas-powered boats allowed
ⓘ
no swimming near dam structures ⓘ |
| hasTrail |
Railway Trail
ⓘ
Reservoir Trail ⓘ |
| isAssociatedWith |
Ruskin Dam
ⓘ
Stave Falls Dam ⓘ |
| isDownstreamOf | Stave Falls Dam ⓘ |
| isUpstreamOf | Stave Lake NERFINISHED ⓘ |
| locatedIn |
British Columbia
ⓘ
District of Mission ⓘ Fraser Valley Regional District ⓘ |
| locatedOn | Stave River ⓘ |
| nearCity |
Maple Ridge, British Columbia
ⓘ
linked to:
Maple Ridge
Mission, British Columbia ⓘ |
| operator | BC Hydro ⓘ |
| ownedBy | BC Hydro ⓘ |
| partOf | Stave River hydroelectric system ⓘ |
| region | Lower Mainland ⓘ |
| use |
flood control
ⓘ
hydroelectric power generation ⓘ recreation ⓘ |
| watercourse | Stave River ⓘ |
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: Hayward Lake Description of subject: Hayward Lake is a man-made reservoir in British Columbia, Canada, created by the damming of the Stave River and used for hydroelectric power generation and recreation.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.