What is the lowest Grid for jj lehto with over 51 laps?
CREATE TABLE table_name_81 (grid INTEGER, laps VARCHAR, driver VARCHAR)
SELECT MIN(grid) FROM table_name_81 WHERE laps > 51 AND driver = "jj lehto"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_81 (grid INTEGER, laps VARCHAR, driver VARCHAR) Question: What is the lowest Grid for jj lehto with over 51 laps? [/INST] SELECT MIN(grid) FROM table_name_81 WHERE laps > 51 AND driver = "jj lehto" </s>