input: Contra_Costa_County,_California | isPartOf | San_Francisco_Bay_Area Antioch,_California | isPartOf | California Antioch,_California | isPartOf | Contra_Costa_County,_California California | language | Spanish_language
target: Antioch, Contra Costa County is part of the San Francisco Bay region of, Spanish speaking, California.
references: Antioch, Contra Costa County is part of the San Francisco Bay region of, Spanish speaking, California. The city of Antioch is located within California, where the Spanish language is spoken. Antioch, is part of Contra Costa County in California, which is part of the San Francisco Bay area. Antioch, is part of Contra Costa County and part of the San Francisco Bay Area in California. Spanish is spoken in California.