How many goals against were scored when the points were smaller than 13, the wins were smaller than 3, and the goals for were smaller than 15?
CREATE TABLE table_8677 (
    "Position" real,
    "Club" text,
    "Played" real,
    "Points" real,
    "Wins" real,
    "Draws" real,
    "Losses" real,
    "Goals for" real,
    "Goals against" real,
    "Goal Difference" real
)
SELECT SUM("Goals against") FROM table_8677 WHERE "Points" < '13' AND "Wins" < '3' AND "Goals for" < '15'
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: How many goals against were scored when the points were smaller than 13, the wins were smaller than 3, and the goals for were smaller than 15? ### Input: CREATE TABLE table_8677 (
    "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 SUM("Goals against") FROM table_8677 WHERE "Points" < '13' AND "Wins" < '3' AND "Goals for" < '15'