Who constructed rolf stommelen's car?
CREATE TABLE table_54204 (
    "Driver" text,
    "Constructor" text,
    "Laps" real,
    "Time/Retired" text,
    "Grid" real
)
SELECT "Constructor" FROM table_54204 WHERE "Driver" = 'rolf stommelen'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Who constructed rolf stommelen's car? ### Input: CREATE TABLE table_54204 (
    "Driver" text,
    "Constructor" text,
    "Laps" real,
    "Time/Retired" text,
    "Grid" real
) ### Response: SELECT "Constructor" FROM table_54204 WHERE "Driver" = 'rolf stommelen'