Mountain View, Contra Costa County, California
E94939
Mountain View is a small unincorporated community located in Contra Costa County in the San Francisco Bay Area of California.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mountain View, Contra Costa County, California canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T797821 — 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: Mountain View, Contra Costa County, California Context triple: [Contra Costa County, hasMajorCity, Mountain View, Contra Costa County, California]
-
A.
Mountain View
Mountain View is a Silicon Valley city in Northern California best known as a major technology hub and the home of companies like Google.
-
B.
South San Francisco
South San Francisco is a city in northern San Mateo County, California, known for its industrial roots, biotech industry presence, and location just south of San Francisco.
-
C.
Menlo Park, California
Menlo Park, California is a city in Silicon Valley known as a hub for technology and venture capital, home to major research institutions and tech companies.
-
D.
Sunnyvale
Sunnyvale is a major Silicon Valley city in Northern California known for its high-tech industry presence and suburban residential communities.
-
E.
Sunnyvale
Sunnyvale is a suburban town in the Dallas–Fort Worth metropolitan area known for its residential character and proximity to Dallas, Texas.
- 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: Mountain View, Contra Costa County, California Target entity description: Mountain View is a small unincorporated community located in Contra Costa County in the San Francisco Bay Area of California.
-
A.
Mountain View
Mountain View is a Silicon Valley city in Northern California best known as a major technology hub and the home of companies like Google.
-
B.
South San Francisco
South San Francisco is a city in northern San Mateo County, California, known for its industrial roots, biotech industry presence, and location just south of San Francisco.
-
C.
Menlo Park, California
Menlo Park, California is a city in Silicon Valley known as a hub for technology and venture capital, home to major research institutions and tech companies.
-
D.
Sunnyvale
Sunnyvale is a major Silicon Valley city in Northern California known for its high-tech industry presence and suburban residential communities.
-
E.
Sunnyvale
Sunnyvale is a suburban town in the Dallas–Fort Worth metropolitan area known for its residential character and proximity to Dallas, Texas.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
census-designated place
ⓘ
unincorporated community ⓘ |
| areaCode | 925 ⓘ |
| category |
Census-designated places in California
ⓘ
Census-designated places in Contra Costa County, California ⓘ Unincorporated communities in California ⓘ Unincorporated communities in Contra Costa County, California ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| county | Contra Costa County ⓘ |
| governingBody |
Contra Costa County government
ⓘ
linked to:
Contra Costa County
|
| hasName | Mountain View ⓘ |
| hasSettlementType | community ⓘ |
| incorporationStatus | unincorporated ⓘ |
| isNot |
Mountain View, Santa Clara County, California
ⓘ
linked to:
Mountain View, California, United States
|
| locatedIn |
Northern California
ⓘ
San Francisco Bay Area ⓘ United States Census Bureau defined place ⓘ United States West Coast ⓘ
linked to:
West Coast of the United States
|
| partOf |
Contra Costa County, California
ⓘ
linked to:
Contra Costa County
San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area ⓘ
linked to:
San Francisco Bay Area
|
| postalCode | 94553 ⓘ |
| region | East Bay ⓘ |
| state |
California
ⓘ
linked to:
California, United States
|
| timeZone | Pacific Time Zone ⓘ |
| timeZoneDST |
Pacific Daylight Time
ⓘ
linked to:
Pacific Time Zone
|
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: Mountain View, Contra Costa County, California Description of subject: Mountain View is a small unincorporated community located in Contra Costa County in the San Francisco Bay Area of California.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.