Hetch Hetchy Valley
E136067
Hetch Hetchy Valley is a glacially carved valley in Yosemite National Park, California, best known for its scenic granite cliffs and for being largely submerged by the Hetch Hetchy Reservoir that supplies water to the San Francisco Bay Area.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Hetch Hetchy Reservoir | 6 |
| Hetch Hetchy Valley canonical | 3 |
| Hetch Hetchy Regional Water System | 1 |
| Hetch Hetchy Reservoir watershed | 1 |
| Hetch Hetchy area | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1109501 — 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: Hetch Hetchy Valley Context triple: [Tuolumne River, flowsThrough, Hetch Hetchy Valley]
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A.
Yosemite Valley
Yosemite Valley is a famous glacial valley in California’s Sierra Nevada, renowned for its towering granite cliffs, waterfalls, and central role as the scenic heart of Yosemite National Park.
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B.
Kaweah River canyon
Kaweah River canyon is a deep, rugged gorge in California’s Sierra Nevada carved by the Kaweah River, known for its dramatic scenery and steep granite walls.
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C.
Owens Valley
Owens Valley is a long, arid valley in eastern California, lying between the Sierra Nevada and the White/Inyo Mountains and known for its dramatic scenery and historic water diversions to Los Angeles.
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D.
Yosemite
Yosemite is a venture firm focused on funding innovative cancer research and biotechnology startups.
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E.
Anderson Valley
Anderson Valley is a rural wine-growing region in Northern California known for its cool-climate Pinot Noir, Chardonnay, and scenic redwood-lined landscapes.
- 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: Hetch Hetchy Valley Target entity description: Hetch Hetchy Valley is a glacially carved valley in Yosemite National Park, California, best known for its scenic granite cliffs and for being largely submerged by the Hetch Hetchy Reservoir that supplies water to the San Francisco Bay Area.
-
A.
Yosemite Valley
Yosemite Valley is a famous glacial valley in California’s Sierra Nevada, renowned for its towering granite cliffs, waterfalls, and central role as the scenic heart of Yosemite National Park.
-
B.
Kaweah River canyon
Kaweah River canyon is a deep, rugged gorge in California’s Sierra Nevada carved by the Kaweah River, known for its dramatic scenery and steep granite walls.
-
C.
Owens Valley
Owens Valley is a long, arid valley in eastern California, lying between the Sierra Nevada and the White/Inyo Mountains and known for its dramatic scenery and historic water diversions to Los Angeles.
-
D.
Yosemite
Yosemite is a venture firm focused on funding innovative cancer research and biotechnology startups.
-
E.
Anderson Valley
Anderson Valley is a rural wine-growing region in Northern California known for its cool-climate Pinot Noir, Chardonnay, and scenic redwood-lined landscapes.
- F. None of above. chosen
Statements (48)
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: Hetch Hetchy Valley Description of subject: Hetch Hetchy Valley is a glacially carved valley in Yosemite National Park, California, best known for its scenic granite cliffs and for being largely submerged by the Hetch Hetchy Reservoir that supplies water to the San Francisco Bay Area.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Hetch Hetchy Valley
linked to: Hetch Hetchy Valley
linked to: Hetch Hetchy Valley
San Francisco Public Utilities Commission
→
ownedInfrastructure
→
Hetch Hetchy Regional Water System
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linked to: Hetch Hetchy Valley
linked to: Hetch Hetchy Valley
linked to: Hetch Hetchy Valley
linked to: Hetch Hetchy Valley
linked to: Hetch Hetchy Valley
linked to: Hetch Hetchy Valley