CREATE TABLE "drivers_and_constructors" (
  "constructor" text,
  "chassis" text,
  "engine" text,
  "tyres" text,
  "driver" text,
  "rounds" text
);

Question: Who constructed the car that Derek Warwick raced in with a TG181 chassis?
SQL: SELECT "constructor" FROM "drivers_and_constructors" WHERE "chassis"='tg181' AND "driver"='derek warwick';