CREATE TABLE "season_2006_07" (
  "date" text,
  "presenter" text,
  "guest_1" text,
  "guest_2" text,
  "guest_3" text,
  "guest_4" text
);

Question: Who is the guest 3 in the show where guest 4 is Jill Douglas?
SQL: SELECT "guest_3" FROM "season_2006_07" WHERE "guest_4"='Jill Douglas';

Question: Who is the guest 2 in the episode where guest 4 is Iyare Igiehon and guest 3 is John Oliver?
SQL: SELECT "guest_2" FROM "season_2006_07" WHERE "guest_4"='Iyare Igiehon' AND "guest_3"='John Oliver';

Question: Who is the guest 1 in the episode where guest 4 is Jill Douglas?
SQL: SELECT "guest_1" FROM "season_2006_07" WHERE "guest_4"='Jill Douglas';

Question: How many dates are associated with a guest 4 being Jim Jeffries (debut)?
SQL: SELECT COUNT("date") FROM "season_2006_07" WHERE "guest_4"='Jim Jeffries (debut)';

Question: What is the date of the episode in which the presenter is Johnny Vaughan?
SQL: SELECT "date" FROM "season_2006_07" WHERE "presenter"='Johnny Vaughan';