If the UK air date is February 18, 2013, who was the episode written by?
CREATE TABLE table_25640730_7 (
    written_by VARCHAR,
    uk_air_date VARCHAR
)
SELECT written_by FROM table_25640730_7 WHERE uk_air_date = "February 18, 2013"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: If the UK air date is February 18, 2013, who was the episode written by? ### Input: CREATE TABLE table_25640730_7 (
    written_by VARCHAR,
    uk_air_date VARCHAR
) ### Response: SELECT written_by FROM table_25640730_7 WHERE uk_air_date = "February 18, 2013"