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_2140071_8 (coach VARCHAR, premier_date VARCHAR, episode VARCHAR)
### Question:
What coach premiered February 16, 2008 later than episode 21.0?
### Answer:
SELECT coach FROM table_2140071_8 WHERE premier_date = "February 16, 2008" AND episode > 21.0