There are many places to live in California other than San Diego; however, one can affirm with certainty that "if someone does not live in California" (non-Q), then "this person does not live in San Diego" (non-P).
ðɛɹˌɑːɹ mˈɛni plˈeɪsᵻz tə lˈɪv ɪn kˌælɪfˈoːɹniə ˈʌðɚ ðɐn sˌæn dɪˈeɪɡoʊ; haʊˈɛvɚ, wˈʌn kæn ɐfˈɜːm wɪð sˈɜːtənti ðˈæt "ɪf sˈʌmwʌn dʌznˌɑːt lˈɪv ɪn kˌælɪfˈoːɹniə" nˈɑːŋkjˈuː, ðˈɛn "ðɪs pˈɜːsən dʌznˌɑːt lˈɪv ɪn sˌæn dɪˈeɪɡoʊ" nˈɑːnpˈiː.