List all season numbers with production codes of 5m21.
CREATE TABLE table_23287683_1 (season__number VARCHAR, production_code VARCHAR)
SELECT season__number FROM table_23287683_1 WHERE production_code = "5M21"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_23287683_1 (season__number VARCHAR, production_code VARCHAR) Question: List all season numbers with production codes of 5m21. [/INST] SELECT season__number FROM table_23287683_1 WHERE production_code = "5M21" </s>