Who wore the episode with the production code of 1apx11?
CREATE TABLE table_21994729_2 (written_by VARCHAR, prod_code VARCHAR)
SELECT written_by FROM table_21994729_2 WHERE prod_code = "1APX11"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21994729_2 (written_by VARCHAR, prod_code VARCHAR) Question: Who wore the episode with the production code of 1apx11? [/INST] SELECT written_by FROM table_21994729_2 WHERE prod_code = "1APX11" </s>