In what Year did the Norton Team have 0 Points and 350cc Class?
CREATE TABLE table_name_81 (year INTEGER, points VARCHAR, class VARCHAR, team VARCHAR)
SELECT AVG(year) FROM table_name_81 WHERE class = "350cc" AND team = "norton" AND points < 0
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_81 (year INTEGER, points VARCHAR, class VARCHAR, team VARCHAR) Question: In what Year did the Norton Team have 0 Points and 350cc Class? [/INST] SELECT AVG(year) FROM table_name_81 WHERE class = "350cc" AND team = "norton" AND points < 0 </s>