In what TV season did the 3rd season air?
CREATE TABLE "american_television_ratings" (
  "season" text,
  "timeslot" text,
  "season_premiere" text,
  "season_finale" text,
  "episodes" real,
  "tv_season" text,
  "ranking" text,
  "viewers_in_millions" text
);
SELECT "tv_season" FROM "american_television_ratings" WHERE "season"='3rd';