What is the sum of season when the venue was donington park, and Brazil came in second?
CREATE TABLE table_name_21 (
    season INTEGER,
    venue VARCHAR,
    second VARCHAR
)
SELECT SUM(season) FROM table_name_21 WHERE venue = "donington park" AND second = "brazil"
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: What is the sum of season when the venue was donington park, and Brazil came in second? ### Input: CREATE TABLE table_name_21 (
    season INTEGER,
    venue VARCHAR,
    second VARCHAR
) ### Response: SELECT SUM(season) FROM table_name_21 WHERE venue = "donington park" AND second = "brazil"