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_27155243_3 (total__number VARCHAR, directed_by VARCHAR)
  ### Question:
  How many different episode numbers are there for the episodes directed by Sheri Elwood?
  ### Answer:
  SELECT COUNT(total__number) FROM table_27155243_3 WHERE directed_by = "Sheri Elwood"