What is the total number of episodes where jim sweeney was the 1st performer and steve steen was the 2nd performer?
CREATE TABLE "series_4" (
  "date" text,
  "episode" real,
  "performer_1" text,
  "performer_2" text,
  "performer_3" text,
  "performer_4" text
);
SELECT COUNT("episode") FROM "series_4" WHERE "performer_1"='jim sweeney' AND "performer_2"='steve steen';