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_16799784_7 (diameter__km_ VARCHAR, latitude VARCHAR)
  ### Question:
  what is the diameter (km) of the feature of latitude 23.0s
  ### Answer:
  SELECT diameter__km_ FROM table_16799784_7 WHERE latitude = "23.0S"