CREATE TABLE table_67518 ("Driver" CLOB, "Constructor" CLOB, "Laps" CLOB, "Time/Retired" CLOB, "Grid" CLOB)

What was the grid when the driver was Mark Webber?
SELECT "Grid" FROM table_67518 WHERE "Driver" = 'mark webber'
SELECT "Grid" FROM "table_67518" WHERE "Driver" = 'mark webber'