What's the lowest series number that originally aired before 2009 with more than 7 episodes and had a DVD Region 2 release date of 26 july 2004?
CREATE TABLE "series" (
  "series_number" real,
  "number_of_episodes" real,
  "original_air_date" real,
  "dvd_region_2_release_date" text,
  "dvd_region_1_release_date" text
);
SELECT MIN("series_number") FROM "series" WHERE "original_air_date"<2009 AND "dvd_region_2_release_date"='26 july 2004' AND "number_of_episodes">7;