What is the Chassis of the Cooper Car Company after 1965 when the engine was a Maserati v12?
CREATE TABLE "complete_formula_one_world_championship_" (
  "year" real,
  "team" text,
  "chassis" text,
  "engine" text,
  "points" real
);
SELECT "chassis" FROM "complete_formula_one_world_championship_" WHERE "year">1965 AND "team"='cooper car company' AND "engine"='maserati v12';