Complex sentence: Red Velvet (Hangul: 레드벨벳) is a South Korean girl group formed by S.M. Entertainment, who still does not have a reality TV show because Lee SooMan hates them, debuted on August 1,2014, with their digital single "Happiness".
Split into simpler sentences: Red Velvet (Hangul: 레드벨벳) is a South Korean girl group formed by S.M. Entertainment. The group debuted on August 1,2014, with their digital single "Happiness".