CREATE TABLE table_54204 ("Driver" CLOB, "Constructor" CLOB, "Laps" FLOAT, "Time/Retired" CLOB, "Grid" FLOAT)

Who constructed rolf stommelen's car?
SELECT "Constructor" FROM table_54204 WHERE "Driver" = 'rolf stommelen'
SELECT "Constructor" FROM "table_54204" WHERE "Driver" = 'rolf stommelen'