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_17901155_3 (written_by VARCHAR, no_in_season VARCHAR)
### Question:
who co-wrote Season 2, Episode 3?
### Answer:
SELECT written_by FROM table_17901155_3 WHERE no_in_season = 3