Pyramid Lake
E380948
Pyramid Lake is a man-made reservoir in Southern California’s Angeles National Forest, popular for boating, fishing, and camping.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Pyramid Lake canonical | 3 |
| Pyramid Lake (California) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3622727 — 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: Pyramid Lake Context triple: [Angeles National Forest, contains, Pyramid Lake]
-
A.
Pyramid Lake
Pyramid Lake is a large desert lake in northwestern Nevada known for its striking pyramid-shaped tufa formations and cultural significance to the Pyramid Lake Paiute Tribe.
-
B.
Winnemucca Lake
Winnemucca Lake is a scenic alpine lake in the Sierra Nevada of California, popular for hiking, fishing, and wildflower viewing.
-
C.
Donner Lake
Donner Lake is a scenic alpine lake in the Sierra Nevada of California, known for its clear waters, recreational activities, and historical association with the Donner Party.
-
D.
Sevier Lake
Sevier Lake is a large, typically dry terminal lake in central Utah’s Great Basin, known for its fluctuating water levels and saline playa environment.
-
E.
Lake Tahoe
Lake Tahoe is a large, deep, and famously clear freshwater lake in the Sierra Nevada mountains, straddling the border of California and Nevada and serving as a major destination for outdoor recreation and tourism.
- 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: Pyramid Lake Target entity description: Pyramid Lake is a man-made reservoir in Southern California’s Angeles National Forest, popular for boating, fishing, and camping.
-
A.
Pyramid Lake
Pyramid Lake is a large desert lake in northwestern Nevada known for its striking pyramid-shaped tufa formations and cultural significance to the Pyramid Lake Paiute Tribe.
-
B.
Winnemucca Lake
Winnemucca Lake is a scenic alpine lake in the Sierra Nevada of California, popular for hiking, fishing, and wildflower viewing.
-
C.
Donner Lake
Donner Lake is a scenic alpine lake in the Sierra Nevada of California, known for its clear waters, recreational activities, and historical association with the Donner Party.
-
D.
Sevier Lake
Sevier Lake is a large, typically dry terminal lake in central Utah’s Great Basin, known for its fluctuating water levels and saline playa environment.
-
E.
Lake Tahoe
Lake Tahoe is a large, deep, and famously clear freshwater lake in the Sierra Nevada mountains, straddling the border of California and Nevada and serving as a major destination for outdoor recreation and tourism.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
lake
ⓘ
reservoir ⓘ tourist attraction ⓘ |
| accessibleFrom | Interstate 5 ⓘ |
| basinCountry |
United States
ⓘ
linked to:
United States of America
|
| country |
United States
ⓘ
linked to:
United States of America
|
| createdBy | Pyramid Dam ⓘ |
| fishSpecies |
bluegill
ⓘ
channel catfish ⓘ crappie ⓘ largemouth bass ⓘ smallmouth bass ⓘ striped bass ⓘ trout (stocked) ⓘ |
| hasActivityRegulation |
boating speed limits
ⓘ
designated swimming areas only ⓘ fishing license required ⓘ |
| hasFacility |
boat ramps
ⓘ
campgrounds ⓘ fish cleaning stations ⓘ marina ⓘ parking areas ⓘ picnic areas ⓘ restrooms ⓘ |
| hasNameOrigin | named after nearby Pyramid Rock formation ⓘ |
| locatedIn |
Angeles National Forest
ⓘ
California ⓘ
linked to:
California, United States
Los Angeles County ⓘ Piru Creek valley ⓘ
linked to:
Piru Creek
Southern California ⓘ |
| locatedNorthOf | Los Angeles ⓘ |
| managingAgency |
California Department of Water Resources
ⓘ
United States Forest Service ⓘ
linked to:
U.S. Forest Service
|
| manMade | true ⓘ |
| near |
Castaic
ⓘ
linked to:
Castaic, California
Gorman ⓘ |
| openedForRecreation | 1970s ⓘ |
| partOf |
California State Water Project
ⓘ
linked to:
State Water Project
|
| primaryUse | water storage ⓘ |
| use |
boating
ⓘ
camping ⓘ fishing ⓘ recreation ⓘ swimming (designated areas) ⓘ |
| watercourse | Piru Creek ⓘ |
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: Pyramid Lake Description of subject: Pyramid Lake is a man-made reservoir in Southern California’s Angeles National Forest, popular for boating, fishing, and camping.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Pyramid Lake