Table schema:
CREATE TABLE table_name_29 (goal_difference VARCHAR, points_1 VARCHAR, goals_against VARCHAR, goals_for VARCHAR)

Question: What is the goal difference where the goals against is less than 54, goals for is greater than 51 and points 1 is 63?
SQL: SELECT goal_difference FROM table_name_29 WHERE goals_against < 54 AND goals_for > 51 AND points_1 = "63"