What is 1 Season, when 4 Season is "2 101 043 (13 May 2009)"?
CREATE TABLE "rating_figures" (
  "episode" text,
  "1_season" text,
  "2_season" text,
  "3_season" text,
  "4_season" text,
  "5_season" text,
  "6_season" text
);
SELECT "1_season" FROM "rating_figures" WHERE "4_season"='2 101 043 (13 may 2009)';