Which Tournament has a Opponent of piero luisi?
CREATE TABLE table_name_31 (tournament VARCHAR, opponent VARCHAR)
SELECT tournament FROM table_name_31 WHERE opponent = "piero luisi"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_31 (tournament VARCHAR, opponent VARCHAR) Question: Which Tournament has a Opponent of piero luisi? [/INST] SELECT tournament FROM table_name_31 WHERE opponent = "piero luisi" </s>