What is the position of club Melilla CF, with a goal difference smaller than -10?
CREATE TABLE table_name_63 (
    position INTEGER,
    club VARCHAR,
    goal_difference VARCHAR
)
SELECT SUM(position) FROM table_name_63 WHERE club = "melilla cf" AND goal_difference < -10
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 position of club Melilla CF, with a goal difference smaller than -10? ### Input: CREATE TABLE table_name_63 (
    position INTEGER,
    club VARCHAR,
    goal_difference VARCHAR
) ### Response: SELECT SUM(position) FROM table_name_63 WHERE club = "melilla cf" AND goal_difference < -10