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_28980706_4 (first_air_date VARCHAR, rating__18_49_ VARCHAR)
### Question:
When 4.5 is the rating (18-49) what is the air date?
### Answer:
SELECT first_air_date FROM table_28980706_4 WHERE rating__18_49_ = "4.5"