What engine did David Coulthard have in his mp4-13 chassis?
CREATE TABLE table_56818 (
    "Entrant" text,
    "Constructor" text,
    "Chassis" text,
    "Engine \u2020" text,
    "Tyre" text,
    "Driver" text,
    "Rounds" text
)
SELECT "Engine \u2020" FROM table_56818 WHERE "Chassis" = 'mp4-13' AND "Driver" = 'david coulthard'
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: What engine did David Coulthard have in his mp4-13 chassis? ### Input: CREATE TABLE table_56818 (
    "Entrant" text,
    "Constructor" text,
    "Chassis" text,
    "Engine \u2020" text,
    "Tyre" text,
    "Driver" text,
    "Rounds" text
) ### Response: SELECT "Engine \u2020" FROM table_56818 WHERE "Chassis" = 'mp4-13' AND "Driver" = 'david coulthard'