Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How many Ford Focus electric vehicle emission test scores were recorded in California?

### Inputs:
table_name: table, columns: ['Vehicle', 'EPA rated All-electric range', 'EPA rated combined fuel economy', 'Alaska ( Juneau )', 'California (San Francisco)', 'Mid-Atlantic South (Washington, D.C.)', 'U.S. national average electric mix', 'Southeast (Atlanta)', 'Midwest (Des Moines)', 'Rocky Mountains (Denver)']

### Response:
SELECT COUNT California (San Francisco) FROM table WHERE Vehicle = Ford Focus Electric