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_86 (launch_site VARCHAR, satellite VARCHAR, date VARCHAR, rocket VARCHAR)
  ### Question:
  What is the launch site of the delta iv rocket with an unknown date and a gps iif-10 satellite?
  ### Answer:
  SELECT launch_site FROM table_name_86 WHERE date = "unknown" AND rocket = "delta iv" AND satellite = "gps iif-10"