what is the least year for 4 points?
CREATE TABLE table_66901 (
    "Year" real,
    "Entrant" text,
    "Chassis" text,
    "Engine" text,
    "Points" real
)
SELECT MIN("Year") FROM table_66901 WHERE "Points" = '4'
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 least year for 4 points? ### Input: CREATE TABLE table_66901 (
    "Year" real,
    "Entrant" text,
    "Chassis" text,
    "Engine" text,
    "Points" real
) ### Response: SELECT MIN("Year") FROM table_66901 WHERE "Points" = '4'