What is the Points with a Tries For that is 21?
CREATE TABLE table_39916 (
    "Club" text,
    "Played" text,
    "Drawn" text,
    "Lost" text,
    "Points for" text,
    "Points against" text,
    "Points difference" text,
    "Tries For" text,
    "Tries Against" text,
    "Try Bonus" text,
    "Losing Bonus" text,
    "Points" text
)
SELECT "Points" FROM table_39916 WHERE "Tries For" = '21'
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 Points with a Tries For that is 21? ### Input: CREATE TABLE table_39916 (
    "Club" text,
    "Played" text,
    "Drawn" text,
    "Lost" text,
    "Points for" text,
    "Points against" text,
    "Points difference" text,
    "Tries For" text,
    "Tries Against" text,
    "Try Bonus" text,
    "Losing Bonus" text,
    "Points" text
) ### Response: SELECT "Points" FROM table_39916 WHERE "Tries For" = '21'