CREATE TABLE table_name_21 (played VARCHAR, try_bonus VARCHAR, points_against VARCHAR)

How many games did the Club that has a try bonus of 4 and 391 points against play ?
SELECT played FROM table_name_21 WHERE try_bonus = "4" AND points_against = "391"
SELECT "played" FROM "table_name_21" WHERE "391" = "points_against" AND "4" = "try_bonus"