What team placed sixth during the season where Western Australia placed fourth and Tasmania placed first?
CREATE TABLE "2000_01_to_date" (
  "season" text,
  "first" text,
  "second" text,
  "third" text,
  "fourth" text,
  "fifth" text,
  "sixth" text
);
SELECT "sixth" FROM "2000_01_to_date" WHERE "fourth"='western australia' AND "first"='tasmania';