Lake Mead
E40441
Lake Mead is a large man-made reservoir on the Colorado River in the southwestern United States, known for supplying water and hydroelectric power to millions of people in the region.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Lake Mead canonical | 48 |
| Black Canyon Reservoir (Hoover Dam reservoir section) | 1 |
| Lake Mead near the Overton Arm | 1 |
| Lake Mead reservoir | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T303306 — 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: Lake Mead Context triple: [Hoover Dam, reservoir, Lake Mead]
-
A.
Lake Mead National Recreation Area
Lake Mead National Recreation Area is a vast protected landscape in the American Southwest centered on the reservoirs of the Colorado River, offering desert scenery, water-based recreation, and wildlife habitat.
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B.
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.
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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.
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.
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E.
Salton Sea
The Salton Sea is a large, saline, endorheic lake in the Colorado Desert of Southern California, known for its fluctuating water levels, high salinity, and significant environmental and ecological challenges.
- 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: Lake Mead Target entity description: Lake Mead is a large man-made reservoir on the Colorado River in the southwestern United States, known for supplying water and hydroelectric power to millions of people in the region.
-
A.
Lake Mead National Recreation Area
Lake Mead National Recreation Area is a vast protected landscape in the American Southwest centered on the reservoirs of the Colorado River, offering desert scenery, water-based recreation, and wildlife habitat.
-
B.
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.
-
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.
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.
-
E.
Salton Sea
The Salton Sea is a large, saline, endorheic lake in the Colorado Desert of Southern California, known for its fluctuating water levels, high salinity, and significant environmental and ecological challenges.
- F. None of above. chosen
Statements (49)
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: Lake Mead Description of subject: Lake Mead is a large man-made reservoir on the Colorado River in the southwestern United States, known for supplying water and hydroelectric power to millions of people in the region.
Referenced by (51)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Lake Mead
subject linked to:
southern Nevada
subject linked to:
southern Nevada
linked to: Lake Mead
subject linked to:
Muddy River
subject linked to:
Muddy River
subject linked to:
Muddy River
linked to: Lake Mead