Which League has a League Cup smaller than 0?
CREATE TABLE table_40664 (
    "Player" text,
    "Club" text,
    "League" real,
    "FA Cup" real,
    "FA Trophy" real,
    "League Cup" real,
    "Total" real
)
SELECT MIN("League") FROM table_40664 WHERE "League Cup" < '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: Which League has a League Cup smaller than 0? ### Input: CREATE TABLE table_40664 (
    "Player" text,
    "Club" text,
    "League" real,
    "FA Cup" real,
    "FA Trophy" real,
    "League Cup" real,
    "Total" real
) ### Response: SELECT MIN("League") FROM table_40664 WHERE "League Cup" < '0'