What season number was assigned to the episode identified with the production code 401? 
CREATE TABLE table_28081876_6 (season_no VARCHAR, production_code VARCHAR)
SELECT season_no FROM table_28081876_6 WHERE production_code = 401
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_28081876_6 (season_no VARCHAR, production_code VARCHAR) Question: What season number was assigned to the episode identified with the production code 401?  [/INST] SELECT season_no FROM table_28081876_6 WHERE production_code = 401 </s>