How many total points belong to the team with a goal difference of 8?
CREATE TABLE table_4891 (
    "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("Points") FROM table_4891 WHERE "Goal Difference" = '8'
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 total points belong to the team with a goal difference of 8? ### Input: CREATE TABLE table_4891 (
    "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("Points") FROM table_4891 WHERE "Goal Difference" = '8'