Tell me the chassis for team tissot ensign and driver of brett lunger
CREATE TABLE "drivers_and_constructors" (
  "entrant" text,
  "constructor" text,
  "chassis" text,
  "engine" text,
  "tyres" text,
  "driver" text,
  "rounds" text
);
SELECT "chassis" FROM "drivers_and_constructors" WHERE "entrant"='team tissot ensign' AND "driver"='brett lunger';