Boulder City, Nevada
E44664
Boulder City, Nevada is a planned community in southern Nevada best known for housing workers during the construction of Hoover Dam and for being one of the few U.S. cities where gambling is prohibited.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Boulder City, Nevada canonical | 15 |
| Boulder City | 3 |
| City of Boulder City | 3 |
| Boulder City, Nevada, United States | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T303324 — 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: Boulder City, Nevada Context triple: [Hoover Dam, nearCity, Boulder City, Nevada]
-
A.
Fallon, Nevada
Fallon, Nevada is a small city in western Nevada known for its agricultural community, nearby Naval Air Station Fallon, and location along the historic “Loneliest Road in America.”
-
B.
Pahrump, Nevada
Pahrump, Nevada is a small desert town in Nye County known as a gateway community to Death Valley National Park and the surrounding Mojave Desert region.
-
C.
Beatty, Nevada
Beatty, Nevada is a small desert town in Nye County that serves as a primary gateway community to nearby Death Valley National Park.
-
D.
Primm, Nevada
Primm, Nevada is a small casino and resort town on the Nevada–California border known as a popular stopover for travelers between Los Angeles and Las Vegas.
-
E.
Stateline, Nevada
Stateline, Nevada is a small resort town on the south shore of Lake Tahoe known for its casinos, hotels, and outdoor recreation at the California–Nevada border.
- 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: Boulder City, Nevada Target entity description: Boulder City, Nevada is a planned community in southern Nevada best known for housing workers during the construction of Hoover Dam and for being one of the few U.S. cities where gambling is prohibited.
-
A.
Fallon, Nevada
Fallon, Nevada is a small city in western Nevada known for its agricultural community, nearby Naval Air Station Fallon, and location along the historic “Loneliest Road in America.”
-
B.
Pahrump, Nevada
Pahrump, Nevada is a small desert town in Nye County known as a gateway community to Death Valley National Park and the surrounding Mojave Desert region.
-
C.
Beatty, Nevada
Beatty, Nevada is a small desert town in Nye County that serves as a primary gateway community to nearby Death Valley National Park.
-
D.
Primm, Nevada
Primm, Nevada is a small casino and resort town on the Nevada–California border known as a popular stopover for travelers between Los Angeles and Las Vegas.
-
E.
Stateline, Nevada
Stateline, Nevada is a small resort town on the south shore of Lake Tahoe known for its casinos, hotels, and outdoor recreation at the California–Nevada border.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
city
ⓘ
planned community ⓘ |
| areaCode |
702
ⓘ
725 ⓘ |
| climate | hot desert climate ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| county |
Clark County
ⓘ
surface form:
Clark County, Nevada
|
| distanceTo | approximately 26 miles southeast of Las Vegas ⓘ |
| elevation | approximately 2,500 feet above sea level ⓘ |
| founded | 1931 ⓘ |
| foundedFor | housing workers during the construction of Hoover Dam ⓘ |
| governmentType | council–manager government ⓘ |
| growthPolicy | caps population growth ⓘ |
| hasAirport | Boulder City Municipal Airport ⓘ |
| hasAttraction |
Hoover Dam Museum
ⓘ
historic downtown district ⓘ |
| incorporated | 1959 ⓘ |
| knownFor |
historic role in Hoover Dam construction
ⓘ
small-town character ⓘ strict growth controls ⓘ |
| locatedIn | southern Nevada ⓘ |
| locatedNear |
Hoover Dam
ⓘ
Lake Mead ⓘ |
| locatedOn |
U.S. Route 93
NERFINISHED
ⓘ
U.S. Route 95 NERFINISHED ⓘ |
| namedAfter | Boulder Canyon ⓘ |
| near |
Colorado River
ⓘ
Lake Mead National Recreation Area ⓘ |
| nearbyCity | Las Vegas, Nevada ⓘ |
| oneOfFewIn | U.S. cities where gambling is prohibited ⓘ |
| originallyAdministeredBy |
Bureau of Reclamation
ⓘ
surface form:
U.S. Bureau of Reclamation
|
| originalPurpose | federal company town for dam workers ⓘ |
| partOf |
Las Vegas Valley
ⓘ
surface form:
Las Vegas Valley metropolitan area
|
| population | approximately 16,000 ⓘ |
| postalCode |
89005
ⓘ
89006 ⓘ |
| prohibits | gambling ⓘ |
| region | Mojave Desert ⓘ |
| state | Nevada ⓘ |
| timeZone | Pacific Time Zone ⓘ |
| tourismBasedOn |
outdoor recreation
ⓘ
proximity to Hoover Dam ⓘ proximity to Lake Mead ⓘ |
| zoningPolicy | limits building heights ⓘ |
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: Boulder City, Nevada Description of subject: Boulder City, Nevada is a planned community in southern Nevada best known for housing workers during the construction of Hoover Dam and for being one of the few U.S. cities where gambling is prohibited.
Referenced by (22)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Boulder City
subject surface form:
Southern Nevada
this entity surface form:
Boulder City
this entity surface form:
City of Boulder City
this entity surface form:
City of Boulder City
this entity surface form:
City of Boulder City
this entity surface form:
Boulder City
this entity surface form:
Boulder City, Nevada, United States