how many nations earned no bronze medals ?
CREATE TABLE table_203_724 (
    id number,
    "rank" number,
    "nation" text,
    "gold" number,
    "silver" number,
    "bronze" number,
    "total" number
)
SELECT COUNT("nation") FROM table_203_724 WHERE "bronze" = 0
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 nations earned no bronze medals ? ### Input: CREATE TABLE table_203_724 (
    id number,
    "rank" number,
    "nation" text,
    "gold" number,
    "silver" number,
    "bronze" number,
    "total" number
) ### Response: SELECT COUNT("nation") FROM table_203_724 WHERE "bronze" = 0