CREATE TABLE table_name_21 (grid NUMBER, laps VARCHAR2, driver VARCHAR2)

what is the lowest grid when the laps is more than 7 and the driver is rubens barrichello?
SELECT MIN(grid) FROM table_name_21 WHERE laps > 7 AND driver = "rubens barrichello"
SELECT MIN("grid") FROM "table_name_21" WHERE "driver" = "rubens barrichello" AND "laps" > 7