Who were the writers for series number 20?
CREATE TABLE table_11951237_1 (written_by VARCHAR, series__number VARCHAR)
SELECT written_by FROM table_11951237_1 WHERE series__number = 20
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_11951237_1 (written_by VARCHAR, series__number VARCHAR) Question: Who were the writers for series number 20? [/INST] SELECT written_by FROM table_11951237_1 WHERE series__number = 20 </s>