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_23 (date INTEGER, region VARCHAR, format VARCHAR)
  ### Question:
  WHAT IS THE LOWEST DATE FOR KOREA, IN CD FORMAT?
  ### Answer:
  SELECT MIN(date) FROM table_name_23 WHERE region = "korea" AND format = "cd"