How many events did clay win?
CREATE TABLE table_66228 (
    "!Event" real,
    "Round" text,
    "Surface" text,
    "Winner" text,
    "Opponent" text,
    "Result" text
)
SELECT COUNT("!Event") FROM table_66228 WHERE "Winner" = 'clay'
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 events did clay win? ### Input: CREATE TABLE table_66228 (
    "!Event" real,
    "Round" text,
    "Surface" text,
    "Winner" text,
    "Opponent" text,
    "Result" text
) ### Response: SELECT COUNT("!Event") FROM table_66228 WHERE "Winner" = 'clay'