CREATE TABLE "series_3" (
  "episode" text,
  "first_broadcast" text,
  "seans_team" text,
  "daves_team" text,
  "scores" text
);

Question: In which episode is Sean's team made up of Krishnan Guru-Murthy and Vic Reeves?
SQL: SELECT "episode" FROM "series_3" WHERE "seans_team"='Krishnan Guru-Murthy and Vic Reeves';

Question: What is the first broadcast date of the episode in which Dave's team is made up of Dave Johns and Sally Lindsay?
SQL: SELECT "first_broadcast" FROM "series_3" WHERE "daves_team"='Dave Johns and Sally Lindsay';

Question: What was the first broadcast date of the episode in which Sean's team is made up of Peter Serafinowicz and Johnny Vegas?
SQL: SELECT "first_broadcast" FROM "series_3" WHERE "seans_team"='Peter Serafinowicz and Johnny Vegas';

Question: In how many episodes was Dave's team made up of David Walliams and Louis Walsh?
SQL: SELECT COUNT("episode") FROM "series_3" WHERE "daves_team"='David Walliams and Louis Walsh';