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_25640730_7 (written_by VARCHAR, uk_air_date VARCHAR)
### Question:
If the UK air date is February 18, 2013, who was the episode written by?
### Answer:
SELECT written_by FROM table_25640730_7 WHERE uk_air_date = "February 18, 2013"