Name the average year for 4 rank
CREATE TABLE "biggest_third_week_domestic_nett_gross_e" (
  "rank" real,
  "movie" text,
  "year" real,
  "studio_s" text,
  "third_week_nett_gross" real
);
SELECT AVG("year") FROM "biggest_third_week_domestic_nett_gross_e" WHERE "rank"=4;