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_25390694_2 (production_code VARCHAR, writer VARCHAR)
### Question:
What was the production code of the episode written by Brendan Cowell?
### Answer:
SELECT production_code FROM table_25390694_2 WHERE writer = "Brendan Cowell"