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 (nation VARCHAR, sail VARCHAR)
  ### Question:
  Which Nation has the USA-18 sail?
  ### Answer:
  SELECT nation FROM table_name_91 WHERE sail = "usa-18"