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_90 (period VARCHAR, country VARCHAR, peak_position VARCHAR)
  ### Question:
  Name the period for south korea with peak position of #1
  ### Answer:
  SELECT period FROM table_name_90 WHERE country = "south korea" AND peak_position = "#1"