Lake Mead National Recreation Area
E9939
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.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Lake Mead National Recreation Area canonical | 32 |
| Hoover Dam area | 1 |
| Lake Mead National Recreation Area (portion) | 1 |
| Lake Mead region | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12080 — 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 National Recreation Area Context triple: [Mojave Desert, contains, Lake Mead National Recreation Area]
-
A.
Hoover Dam
Hoover Dam is a massive concrete arch-gravity dam on the Colorado River, renowned as a landmark feat of 20th-century American engineering and a major source of hydroelectric power and water management in the Southwest.
-
B.
Joshua Tree National Park
Joshua Tree National Park is a vast desert park in Southern California known for its striking Joshua trees, rugged rock formations, and stark Mojave–Colorado desert landscapes.
-
C.
Lake Tahoe Basin
The Lake Tahoe Basin is a high-altitude watershed in the Sierra Nevada centered on Lake Tahoe, renowned for its clear alpine lake, surrounding forests, and year-round outdoor recreation.
-
D.
Lassen Volcanic National Park
Lassen Volcanic National Park is a U.S. national park in northern California known for its active geothermal features, including fumaroles, hot springs, and the prominent Lassen Peak volcano.
-
E.
South Lake Tahoe
South Lake Tahoe is a resort city in California known for its access to Lake Tahoe’s beaches, ski resorts, and outdoor recreation.
- 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 National Recreation Area Target entity description: 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.
-
A.
Hoover Dam
Hoover Dam is a massive concrete arch-gravity dam on the Colorado River, renowned as a landmark feat of 20th-century American engineering and a major source of hydroelectric power and water management in the Southwest.
-
B.
Joshua Tree National Park
Joshua Tree National Park is a vast desert park in Southern California known for its striking Joshua trees, rugged rock formations, and stark Mojave–Colorado desert landscapes.
-
C.
Lake Tahoe Basin
The Lake Tahoe Basin is a high-altitude watershed in the Sierra Nevada centered on Lake Tahoe, renowned for its clear alpine lake, surrounding forests, and year-round outdoor recreation.
-
D.
Lassen Volcanic National Park
Lassen Volcanic National Park is a U.S. national park in northern California known for its active geothermal features, including fumaroles, hot springs, and the prominent Lassen Peak volcano.
-
E.
South Lake Tahoe
South Lake Tahoe is a resort city in California known for its access to Lake Tahoe’s beaches, ski resorts, and outdoor recreation.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
national recreation area
ⓘ
protected area ⓘ tourist attraction ⓘ |
| area |
about 1,500,000 acres
ⓘ
about 607,000 hectares ⓘ |
| climate | arid ⓘ |
| contains |
Black Canyon
ⓘ
Eldorado Mountains ⓘ Muddy Mountains ⓘ |
| containsBodyOfWater |
Colorado River
ⓘ
Lake Mead ⓘ Lake Mohave ⓘ |
| containsStructure |
Davis Dam
ⓘ
Hoover Dam ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| createdAround | reservoirs of the Colorado River ⓘ |
| ecosystemType | desert ecosystem ⓘ |
| establishedAsNationalRecreationArea | October 8, 1964 ⓘ |
| follows | Colorado River ⓘ |
| governingBody |
United States Department of the Interior
ⓘ
surface form:
U.S. Department of the Interior
|
| hasPart |
Lake Mead
ⓘ
Lake Mohave ⓘ |
| hasVisitorCenter | Alan Bible Visitor Center ⓘ |
| inception | 1964 ⓘ |
| iucnCategory | V (Protected Landscape/Seascape) ⓘ |
| knownFor |
desert scenery
ⓘ
dramatic lake shorelines ⓘ water-based recreation ⓘ |
| locatedIn |
southwestern United States
ⓘ
surface form:
American Southwest
Nevada ⓘ
surface form:
Arizona
Nevada ⓘ |
| locatedInDesert |
Mojave Desert
ⓘ
Sonoran–Mojave transition zone ⓘ
surface form:
Sonoran Desert transition zone
|
| managingOrganization |
National Park Service
ⓘ
surface form:
United States National Park Service
|
| nearestCity | Las Vegas, Nevada ⓘ |
| offersActivity |
boating
ⓘ
camping ⓘ fishing ⓘ hiking ⓘ scuba diving ⓘ swimming ⓘ wildlife viewing ⓘ |
| operator | National Park Service ⓘ |
| partOf |
United States National Park System
ⓘ
surface form:
National Park System
|
| providesHabitatFor |
coyotes
ⓘ
desert bighorn sheep ⓘ migratory birds ⓘ various raptors ⓘ |
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 National Recreation Area Description of subject: 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.
Referenced by (35)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lake Mead region
subject surface form:
National Recreation Area
this entity surface form:
Lake Mead National Recreation Area (portion)
subject surface form:
Searchlight, Nevada
this entity surface form:
Hoover Dam area