I have column with data like:

A1: 123 Main St. San Francisco
A2: 5654 Moon Hollow Way Oakland

I have over 10 thousand of these. My goal is to pull the city out, but since
the city is in different places (and after x y or z number of spaces, etc.)
I cannot seem to do it with a simple text formula.

and I have another list of cities only like:

C1: San Bernadino
C2: Oakland
C3: San Francisco

My question is -- can I do a formula, say in B1, that would search through
my list in C1:C2 within A1, and return the found match?

In other words the result would be:

A1: 123 Main St. San Francisco
B1: San Francisco

(e.g. it found that "San Francisco" was contained within A1, and returned
the match from the list of cities in C1:C3)

Any ideas?