How many seasons was clay regazzoni the driver?
CREATE TABLE table_10753917_1 (
    season VARCHAR,
    driver VARCHAR
)
SELECT COUNT(season) FROM table_10753917_1 WHERE driver = "Clay Regazzoni"
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: How many seasons was clay regazzoni the driver? ### Input: CREATE TABLE table_10753917_1 (
    season VARCHAR,
    driver VARCHAR
) ### Response: SELECT COUNT(season) FROM table_10753917_1 WHERE driver = "Clay Regazzoni"