what is the average points when the goal difference is less than 17, the club is getafe cf and the goals for is more than 30?
CREATE TABLE table_58240 (
    "Position" real,
    "Club" text,
    "Played" real,
    "Points" real,
    "Wins" real,
    "Draws" real,
    "Losses" real,
    "Goals for" real,
    "Goals against" real,
    "Goal Difference" real
)
SELECT AVG("Points") FROM table_58240 WHERE "Goal Difference" < '17' AND "Club" = 'getafe cf' AND "Goals for" > '30'
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 average points when the goal difference is less than 17, the club is getafe cf and the goals for is more than 30? ### Input: CREATE TABLE table_58240 (
    "Position" real,
    "Club" text,
    "Played" real,
    "Points" real,
    "Wins" real,
    "Draws" real,
    "Losses" real,
    "Goals for" real,
    "Goals against" real,
    "Goal Difference" real
) ### Response: SELECT AVG("Points") FROM table_58240 WHERE "Goal Difference" < '17' AND "Club" = 'getafe cf' AND "Goals for" > '30'