CREATE TABLE table_name_39 (grid INT, driver VARCHAR, laps VARCHAR)

what is the grid when the driver is louis rosier and the laps is more than 78?
SELECT MIN(grid) FROM table_name_39 WHERE driver = "louis rosier" AND laps > 78
SELECT MIN("grid") FROM "table_name_39" WHERE "driver" = "louis rosier" AND "laps" > 78