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_68 (goals_against INTEGER, goals_for VARCHAR, goal_difference VARCHAR)
  ### Question:
  What is the average of goals against, where overall goals are more than 35 and the goal difference is 20?
  ### Answer:
  SELECT AVG(goals_against) FROM table_name_68 WHERE goals_for > 35 AND goal_difference = 20