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_2296507_1 (stellar_classification VARCHAR, system VARCHAR)
  ### Question:
  Name number of stellar classification for 3 neptune planets < 1 au
  ### Answer:
  SELECT COUNT(stellar_classification) FROM table_2296507_1 WHERE system = "3 Neptune planets < 1 AU"