How many counties are there in the San Francisco/San Jose/Oakland Bay Area?
There are nine Bay Area counties
Alameda
Contra Costa
Marin
San Francisco
San Mateo
Santa Clara
Napa
Solano
Sonoma
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(Optional) Context information is below.
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There are nine Bay Area counties
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Answer the following query.
How many counties are there in the San Francisco/San Jose/Oakland Bay Area?

user
Alameda
Contra Costa
Marin
San Francisco
San Mateo
Santa Clara
Napa
Solano
Sonoma
assistant