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_15938543_1 (original_air_date VARCHAR, us_viewers__million_ VARCHAR)
  ### Question:
  How many episodes had an original air date with 5.1 million viewers
  ### Answer:
  SELECT COUNT(original_air_date) FROM table_15938543_1 WHERE us_viewers__million_ = "5.1"