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_13836704_9 (airport VARCHAR, rank VARCHAR)
  ### Question:
   how many airport with rank being 4
  ### Answer:
  SELECT COUNT(airport) FROM table_13836704_9 WHERE rank = 4