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_16799784_3 (diameter__km_ VARCHAR, longitude VARCHAR)
  ### Question:
  At a longitude of 109.9e, how many features were found?
  ### Answer:
  SELECT COUNT(diameter__km_) FROM table_16799784_3 WHERE longitude = "109.9E"