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