Bethel Island, California
E109160
Bethel Island, California is a small unincorporated community and island in the Sacramento–San Joaquin River Delta known for its waterfront recreation and marinas.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Bethel Island, California canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T797812 — 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: Bethel Island, California Context triple: [Contra Costa County, hasMajorCity, Bethel Island, California]
-
A.
Yerba Buena Island
Yerba Buena Island is a natural island in the middle of San Francisco Bay that connects the eastern and western spans of the San Francisco–Oakland Bay Bridge.
-
B.
Bay Point, California
Bay Point, California is an unincorporated suburban community in the San Francisco Bay Area known for its residential neighborhoods and proximity to the Sacramento–San Joaquin River Delta.
-
C.
Santa Barbara Island
Santa Barbara Island is a small, remote volcanic island off the coast of Southern California known for its rugged cliffs, seabird colonies, and protected natural habitats within the Channel Islands archipelago.
-
D.
Santa Rosa Island
Santa Rosa Island is one of California’s Channel Islands known for its rugged coastal landscapes, rare wildlife, and archaeological sites spanning thousands of years of human history.
-
E.
Bombay Beach, California
Bombay Beach, California is a small, offbeat community on the eastern shore of the Salton Sea known for its decaying resort-town remnants, outsider art installations, and stark desert landscape.
- 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: Bethel Island, California Target entity description: Bethel Island, California is a small unincorporated community and island in the Sacramento–San Joaquin River Delta known for its waterfront recreation and marinas.
-
A.
Yerba Buena Island
Yerba Buena Island is a natural island in the middle of San Francisco Bay that connects the eastern and western spans of the San Francisco–Oakland Bay Bridge.
-
B.
Bay Point, California
Bay Point, California is an unincorporated suburban community in the San Francisco Bay Area known for its residential neighborhoods and proximity to the Sacramento–San Joaquin River Delta.
-
C.
Santa Barbara Island
Santa Barbara Island is a small, remote volcanic island off the coast of Southern California known for its rugged cliffs, seabird colonies, and protected natural habitats within the Channel Islands archipelago.
-
D.
Santa Rosa Island
Santa Rosa Island is one of California’s Channel Islands known for its rugged coastal landscapes, rare wildlife, and archaeological sites spanning thousands of years of human history.
-
E.
Bombay Beach, California
Bombay Beach, California is a small, offbeat community on the eastern shore of the Salton Sea known for its decaying resort-town remnants, outsider art installations, and stark desert landscape.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
census-designated place
ⓘ
island ⓘ unincorporated community ⓘ |
| connectedBy | Bethel Island Road ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| governedBy |
Contra Costa County Board of Supervisors
ⓘ
surface form:
Contra Costa County government
|
| hasAreaCode | 925 ⓘ |
| hasClimate | Mediterranean climate ⓘ |
| hasGNISFeatureID |
1658064
ⓘ
2582950 ⓘ |
| hasInfrastructure | levees ⓘ |
| hasLandUseCharacteristic |
primarily residential
ⓘ
recreational ⓘ |
| hasNearbyWaterBody |
Dutch Slough
ⓘ
Franks Tract ⓘ San Joaquin River ⓘ Taylor Slough ⓘ |
| hasNotableActivity |
recreational boating
ⓘ
sport fishing ⓘ watersports ⓘ |
| hasNotableFeature |
boating facilities
ⓘ
fishing access ⓘ marinas ⓘ waterfront properties ⓘ |
| hasPostalCode | 94511 ⓘ |
| hasPrimaryEconomicActivity |
fishing-related services
ⓘ
marina services ⓘ recreation-based tourism ⓘ |
| hasRecreationalFacility |
RV parks
ⓘ
campgrounds ⓘ private marinas ⓘ public boat launches ⓘ |
| hasRisk | flooding ⓘ |
| hasSettlementType | waterfront community ⓘ |
| hasTransportationCharacteristic | no incorporated municipal transit system ⓘ |
| hasUTCOffset | UTC−08:00 ⓘ |
| hasUTCOffsetDST | UTC−07:00 ⓘ |
| isAccessibleBy |
boat
ⓘ
road ⓘ |
| isPartOfRegion |
East Bay
ⓘ
surface form:
San Francisco Bay Area outer region
|
| locatedIn |
California, United States
ⓘ
surface form:
California
Contra Costa County ⓘ
surface form:
Contra Costa County, California
Sacramento–San Joaquin River Delta ⓘ |
| locatedInTimeZone | Pacific Time Zone ⓘ |
| partOf |
Contra Costa County
ⓘ
surface form:
East Contra Costa County
|
| surroundedBy |
Sacramento–San Joaquin River Delta
ⓘ
surface form:
Sacramento–San Joaquin River Delta waterways
|
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: Bethel Island, California Description of subject: Bethel Island, California is a small unincorporated community and island in the Sacramento–San Joaquin River Delta known for its waterfront recreation and marinas.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.