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_91 (airing_date VARCHAR, number_of_episodes VARCHAR, genre VARCHAR)
  ### Question:
  What is the airing date for costume comedy that has 20 episodes?
  ### Answer:
  SELECT airing_date FROM table_name_91 WHERE number_of_episodes = 20 AND genre = "costume comedy"