When bmw activee is the vehicle type how many clean electric grid california (san francisco) measurements are there?
CREATE TABLE table_27009 (
    "Vehicle" text,
    "Operating mode" text,
    "EPA rated All-electric range" text,
    "EPA rated combined fuel economy" text,
    "Clean electric grid California (San Francisco)" text,
    "U.S. national average electric mix" text,
    "Dirty electric grid Rocky Mountains (Denver)" text
)
SELECT COUNT("Clean electric grid California (San Francisco)") FROM table_27009 WHERE "Vehicle" = 'BMW ActiveE'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: When bmw activee is the vehicle type how many clean electric grid california (san francisco) measurements are there? ### Input: CREATE TABLE table_27009 (
    "Vehicle" text,
    "Operating mode" text,
    "EPA rated All-electric range" text,
    "EPA rated combined fuel economy" text,
    "Clean electric grid California (San Francisco)" text,
    "U.S. national average electric mix" text,
    "Dirty electric grid Rocky Mountains (Denver)" text
) ### Response: SELECT COUNT("Clean electric grid California (San Francisco)") FROM table_27009 WHERE "Vehicle" = 'BMW ActiveE'