What is the historical reference of the episode that aired on October 23, 2005?
CREATE TABLE "season_3" (
  "episode_number" real,
  "title" text,
  "podcast_date" text,
  "run_time" text,
  "historical_references" text
);
SELECT "historical_references" FROM "season_3" WHERE "podcast_date"='october 23, 2005';