When driver heinz-harald frentzen has a number of laps greater than 60, what is the sum of grid?
CREATE TABLE table_name_51 (grid VARCHAR, laps VARCHAR, driver VARCHAR)
SELECT COUNT(grid) FROM table_name_51 WHERE laps > 60 AND driver = "heinz-harald frentzen"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_51 (grid VARCHAR, laps VARCHAR, driver VARCHAR) Question: When driver heinz-harald frentzen has a number of laps greater than 60, what is the sum of grid? [/INST] SELECT COUNT(grid) FROM table_name_51 WHERE laps > 60 AND driver = "heinz-harald frentzen" </s>