Sentence: 'Cities in Orange County include La Mesa , Poway , San Marcos , Irvine , Anaheim , Yorba Linda , San Clemente , Dana Point , Newport Beach , Fullerton , Buena Park , East Irvine , Huntington Beach , Costa Mesa , Fountain Valley , Garden Grove , Cypress , Stanton and Santa Ana .', Argument/Subject 1: 'costa mesa', Argument/Subject 2: 'orange county'
be city in