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_23483182_1 (original_air_date VARCHAR, us_viewers__million_ VARCHAR)
### Question:
What was the air date where there were 5.72 million viewers?
### Answer:
SELECT original_air_date FROM table_23483182_1 WHERE us_viewers__million_ = "5.72"