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_20 (original_air_date INTEGER, series_number VARCHAR)
  ### Question:
  What was the original air date of series number 10?
  ### Answer:
  SELECT AVG(original_air_date) FROM table_name_20 WHERE series_number = 10