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 (channels___analog___digital__ VARCHAR, first_air_date VARCHAR, region_served VARCHAR)
  ### Question:
  What channels first aired on 31 December 1990 in the Southern Downs region?
  ### Answer:
  SELECT channels___analog___digital__ FROM table_name_91 WHERE first_air_date = "31 december 1990" AND region_served = "southern downs"