How many years have a position of 2nd?
CREATE TABLE table_39712 (
    "Year" real,
    "Competition" text,
    "Venue" text,
    "Position" text,
    "Event" text,
    "Notes" text
)
SELECT COUNT("Year") FROM table_39712 WHERE "Position" = '2nd'
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 years have a position of 2nd? ### Input: CREATE TABLE table_39712 (
    "Year" real,
    "Competition" text,
    "Venue" text,
    "Position" text,
    "Event" text,
    "Notes" text
) ### Response: SELECT COUNT("Year") FROM table_39712 WHERE "Position" = '2nd'