text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_name_10 (goal_difference INTEGER, played VARCHAR, wins VARCHAR, position VARCHAR)
  ### Question:
  Which Goal Difference has 13 Wins, and a Position of 3, and Played smaller than 30?
  ### Answer:
  SELECT AVG(goal_difference) FROM table_name_10 WHERE wins = 13 AND position = 3 AND played < 30