CREATE TABLE "table1_23575917_4" (
  "episode" text,
  "first_broadcast" text,
  "davids_team" text,
  "lees_team" text,
  "scores" text
);

Question: What is the episode number that was first broadcast on 3 September 2010?
SQL: SELECT "episode" FROM "table1_23575917_4" WHERE "first_broadcast"='3 September 2010';

Question: Who is the Lees Team for episode 4x04?
SQL: SELECT "lees_team" FROM "table1_23575917_4" WHERE "episode"='4x04';

Question: Who is on the David's Team for the episode with the Lees Team of Jack Dee and Peter Serafinowicz
SQL: SELECT "davids_team" FROM "table1_23575917_4" WHERE "lees_team"='Jack Dee and Peter Serafinowicz';

Question: How many David's team for the Lees Team of Deborah Meaden and Mark Watson?
SQL: SELECT COUNT("davids_team") FROM "table1_23575917_4" WHERE "lees_team"='Deborah Meaden and Mark Watson';