Who was the writer of the episode number in series 4?
CREATE TABLE table_16581695_2 (written_by VARCHAR, no_in_series VARCHAR)
SELECT written_by FROM table_16581695_2 WHERE no_in_series = "4"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_16581695_2 (written_by VARCHAR, no_in_series VARCHAR) Question: Who was the writer of the episode number in series 4? [/INST] SELECT written_by FROM table_16581695_2 WHERE no_in_series = "4" </s>