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_28195898_1 (production_code VARCHAR, us_viewers__millions_ VARCHAR)
### Question:
What is the production code for the episode with 5.5 million u.s. viewers?
### Answer:
SELECT production_code FROM table_28195898_1 WHERE us_viewers__millions_ = "5.5"