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_41 (longitude VARCHAR, name VARCHAR, year_named VARCHAR, diameter__km_ VARCHAR)
  ### Question:
  What's the longitude named zipaltonal fluctus in 1997 with a diameter smaller than 490?
  ### Answer:
  SELECT longitude FROM table_name_41 WHERE year_named = 1997 AND diameter__km_ < 490 AND name = "zipaltonal fluctus"