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_25716397_1 (directed_by VARCHAR, series_no VARCHAR)
  ### Question:
  How many directors of episode 55?
  ### Answer:
  SELECT COUNT(directed_by) FROM table_25716397_1 WHERE series_no = 55