What engine did David Coulthard have in his mp4-13 chassis?
CREATE TABLE "drivers_and_constructors" (
  "entrant" text,
  "constructor" text,
  "chassis" text,
  "engine" text,
  "tyre" text,
  "driver" text,
  "rounds" text
);
SELECT "engine" FROM "drivers_and_constructors" WHERE "chassis"='mp4-13' AND "driver"='david coulthard';