Contra Costa County Board of Supervisors
E450309
The Contra Costa County Board of Supervisors is the elected governing body responsible for setting policy, passing ordinances, and overseeing county services and administration in Contra Costa County, California.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Contra Costa County Board of Supervisors canonical | 9 |
| Contra Costa County government | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T4536139 — 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: Contra Costa County Board of Supervisors Context triple: [Tara Hills, California, governingBody, Contra Costa County Board of Supervisors]
-
A.
Solano County Board of Supervisors
The Solano County Board of Supervisors is the elected legislative and executive body that sets policy, enacts ordinances, and oversees the administration and budget of Solano County, California.
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B.
Alameda County Board of Supervisors
The Alameda County Board of Supervisors is the elected governing body responsible for setting policy, passing local laws, and overseeing county services and budgets in Alameda County, California.
-
C.
San Mateo County Board of Supervisors
The San Mateo County Board of Supervisors is the elected governing body responsible for setting policy, passing ordinances, and overseeing the administration and budget of San Mateo County, California.
-
D.
Santa Clara County Board of Supervisors
The Santa Clara County Board of Supervisors is the elected governing body that sets policy, enacts local laws, and oversees the administration and budget of Santa Clara County, California.
-
E.
Contra Costa County Board of Supervisors District 5
Contra Costa County Board of Supervisors District 5 is an electoral district in Contra Costa County, California, represented by a county supervisor who governs and provides services for communities in the county’s northern and northeastern areas.
- 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: Contra Costa County Board of Supervisors Target entity description: The Contra Costa County Board of Supervisors is the elected governing body responsible for setting policy, passing ordinances, and overseeing county services and administration in Contra Costa County, California.
-
A.
Solano County Board of Supervisors
The Solano County Board of Supervisors is the elected legislative and executive body that sets policy, enacts ordinances, and oversees the administration and budget of Solano County, California.
-
B.
Alameda County Board of Supervisors
The Alameda County Board of Supervisors is the elected governing body responsible for setting policy, passing local laws, and overseeing county services and budgets in Alameda County, California.
-
C.
San Mateo County Board of Supervisors
The San Mateo County Board of Supervisors is the elected governing body responsible for setting policy, passing ordinances, and overseeing the administration and budget of San Mateo County, California.
-
D.
Santa Clara County Board of Supervisors
The Santa Clara County Board of Supervisors is the elected governing body that sets policy, enacts local laws, and oversees the administration and budget of Santa Clara County, California.
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E.
Contra Costa County Board of Supervisors District 5
Contra Costa County Board of Supervisors District 5 is an electoral district in Contra Costa County, California, represented by a county supervisor who governs and provides services for communities in the county’s northern and northeastern areas.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
county board of supervisors
ⓘ
elected body ⓘ local governing body ⓘ |
| country | United States of America ⓘ |
| decisionMakingProcess | majority vote ⓘ |
| electoralSystem | single-member districts ⓘ |
| governingBodyOf | Contra Costa County, California NERFINISHED ⓘ |
| governs | Contra Costa County, California NERFINISHED ⓘ |
| hasAuthorityOver |
countywide emergency declarations
ⓘ
countywide tax allocation within legal limits ⓘ creation of county ordinances ⓘ |
| hasChairperson | Board chair of Contra Costa County Board of Supervisors ⓘ |
| hasGovernmentalFunction |
adopts county budget
ⓘ
infrastructure and transportation oversight ⓘ land use and zoning decisions for unincorporated areas ⓘ oversees county administration ⓘ oversees county services ⓘ passes ordinances ⓘ public health policy oversight ⓘ public safety oversight ⓘ sets county policy ⓘ sets countywide priorities ⓘ social services oversight ⓘ |
| hasJurisdiction | unincorporated areas of Contra Costa County ⓘ |
| hasMeetingType | public meetings ⓘ |
| hasNumberOfMembers | 5 ⓘ |
| hasViceChairperson | vice chair of Contra Costa County Board of Supervisors ⓘ |
| isElectedBy | voters of Contra Costa County ⓘ |
| isPartOf | local government of Contra Costa County NERFINISHED ⓘ |
| languageOfWork | English ⓘ |
| legalBasis |
California Government Code
NERFINISHED
ⓘ
Constitution of the State of California NERFINISHED ⓘ |
| levelOfGovernment | county ⓘ |
| locatedIn | Contra Costa County, California NERFINISHED ⓘ |
| overseesBudgetOf | Contra Costa County government NERFINISHED ⓘ |
| represents | five supervisorial districts in Contra Costa County ⓘ |
| responsibleFor |
implementation of county ordinances
ⓘ
implementation of county policies ⓘ |
| sector | public administration ⓘ |
| state |
California, United States
ⓘ
surface form:
California
|
| subjectTo |
California Public Records Act
NERFINISHED
ⓘ
California open meeting laws ⓘ |
| supervises |
Contra Costa County Administrator
NERFINISHED
ⓘ
departments of Contra Costa County government ⓘ |
| worksWith |
Contra Costa County elected officials
ⓘ
cities within Contra Costa County ⓘ |
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: Contra Costa County Board of Supervisors Description of subject: The Contra Costa County Board of Supervisors is the elected governing body responsible for setting policy, passing ordinances, and overseeing county services and administration in Contra Costa County, California.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Contra Costa County government
this entity surface form:
Contra Costa County government
this entity surface form:
Contra Costa County government
this entity surface form:
Contra Costa County government