In how many rounds was Race 17?
CREATE TABLE table_73937 (
    "Round" real,
    "Race" real,
    "Circuit" text,
    "Date" text,
    "Pole Position" text,
    "Fastest Lap" text,
    "Winning driver" text,
    "Winning team" text
)
SELECT COUNT("Round") FROM table_73937 WHERE "Race" = '17'
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: In how many rounds was Race 17? ### Input: CREATE TABLE table_73937 (
    "Round" real,
    "Race" real,
    "Circuit" text,
    "Date" text,
    "Pole Position" text,
    "Fastest Lap" text,
    "Winning driver" text,
    "Winning team" text
) ### Response: SELECT COUNT("Round") FROM table_73937 WHERE "Race" = '17'