What was the lowest draw when the against was larger than 2638?
CREATE TABLE table_12633 (
    "Golden Rivers" text,
    "Wins" real,
    "Byes" real,
    "Losses" real,
    "Draws" real,
    "Against" real
)
SELECT MIN("Draws") FROM table_12633 WHERE "Against" > '2638'
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 was the lowest draw when the against was larger than 2638? ### Input: CREATE TABLE table_12633 (
    "Golden Rivers" text,
    "Wins" real,
    "Byes" real,
    "Losses" real,
    "Draws" real,
    "Against" real
) ### Response: SELECT MIN("Draws") FROM table_12633 WHERE "Against" > '2638'