I think it would be they
but I'm not positive
The answer is they I think
In the question, a common noun referring to both 'Mrs. Hernandez' and 'San Francisco' could be considered. While specific common nouns like 'individual' and 'city' refer separately, 'entity' may serve as a general term applicable to both. However, there is no direct singular common noun that covers both a person and a city specifically.
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