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_16537783_2 (parameter VARCHAR)
  ### Question:
  Name the 1st stage for parameter being diameter
  ### Answer:
  SELECT 1 AS st_stage FROM table_16537783_2 WHERE parameter = "Diameter"