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_1 (production_code VARCHAR, original_air_date VARCHAR, season__number VARCHAR, series__number VARCHAR)
  ### Question:
  What is the production code of the episode before season 8, with a series number less than 31, and aired on September 21, 1995?
  ### Answer:
  SELECT production_code FROM table_name_1 WHERE season__number < 8 AND series__number < 31 AND original_air_date = "september 21, 1995"