What is the average year for a merzario a2 chassis?
CREATE TABLE table_name_91 (year INTEGER, chassis VARCHAR)
SELECT AVG(year) FROM table_name_91 WHERE chassis = "merzario a2"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_91 (year INTEGER, chassis VARCHAR) Question: What is the average year for a merzario a2 chassis? [/INST] SELECT AVG(year) FROM table_name_91 WHERE chassis = "merzario a2" </s>