When michele pirro is the pole position what is the date?
CREATE TABLE table_21191496_1 (date VARCHAR, pole_position VARCHAR)
SELECT date FROM table_21191496_1 WHERE pole_position = "Michele Pirro"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21191496_1 (date VARCHAR, pole_position VARCHAR) Question: When michele pirro is the pole position what is the date? [/INST] SELECT date FROM table_21191496_1 WHERE pole_position = "Michele Pirro" </s>