CREATE TABLE "series_4" (
  "date" text,
  "episode" real,
  "performer_1" text,
  "performer_2" text,
  "performer_3" text,
  "performer_4" text
);

Question: What is the total number of episodes where jim sweeney was the 1st performer and steve steen was the 2nd performer?
SQL: SELECT COUNT("episode") FROM "series_4" WHERE "performer_1"='jim sweeney' AND "performer_2"='steve steen';

Question: What is the sum of the episode numbers where chip esten is the 4th performer and christopher smith was the 2nd performer?
SQL: SELECT SUM("episode") FROM "series_4" WHERE "performer_4"='chip esten' AND "performer_2"='christopher smith';

Question: What is the sum of the episodes where chip esten was the 4th performer and jim meskimen was the 1st performer?
SQL: SELECT SUM("episode") FROM "series_4" WHERE "performer_4"='chip esten' AND "performer_1"='jim meskimen';

Question: Who was the 3rd performer when christopher smith was the 2nd performer?
SQL: SELECT "performer_3" FROM "series_4" WHERE "performer_2"='christopher smith';