Context: CREATE TABLE table_name_69 (series_number INTEGER, number_of_episodes VARCHAR, original_air_date VARCHAR, dvd_region_2_release_date VARCHAR)
Question: 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?
Answer: SELECT MIN(series_number) FROM table_name_69 WHERE original_air_date < 2009 AND dvd_region_2_release_date = "26 july 2004" AND number_of_episodes > 7