How many drivers did Bob Gerard Racing have?
CREATE TABLE table_21977627_1 (
    driver VARCHAR,
    entrant VARCHAR
)
SELECT COUNT(driver) FROM table_21977627_1 WHERE entrant = "Bob Gerard Racing"
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 drivers did Bob Gerard Racing have? ### Input: CREATE TABLE table_21977627_1 (
    driver VARCHAR,
    entrant VARCHAR
) ### Response: SELECT COUNT(driver) FROM table_21977627_1 WHERE entrant = "Bob Gerard Racing"