What is the episode number of the episode that aired on August 8, 2005?
CREATE TABLE "season_3" (
  "episode_number" real,
  "title" text,
  "podcast_date" text,
  "run_time" text,
  "historical_references" text
);
SELECT "episode_number" FROM "season_3" WHERE "podcast_date"='august 8, 2005';