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_29803475_3 (directed_by VARCHAR, us_viewers__million_ VARCHAR)
### Question:
who directed the episode that have 0.25 million u.s viewers
### Answer:
SELECT directed_by FROM table_29803475_3 WHERE us_viewers__million_ = "0.25"