Claim: Vallejo, California is in the United States.
Evidence: Vallejo -LRB- -LSB- vəˈleɪ.oʊ , _ - hoʊ -RSB- ; Spanish : -LSB- baˈʎexo -RSB- -RRB- is a waterfront port city in Solano County , California , located in the North Bay region of the San Francisco Bay Area.
The North Bay is a subregion of the San Francisco Bay Area , in California , United States.
California -LRB- -LSB- kælᵻˈfɔːrnjə , _ - ni.ə -RSB- , -RRB- is the most populous state in the United States and the third most extensive by area.