Complex sentence: Kubrat Venkov Pulev (born 4 May 1981 in Sofia) is a Bulgarian professional heavyweight boxer, best known to medal repeatedly at international tournaments as an amateur, winning the gold medal in the super heavyweight division at the 2008 European Championships.
Split into simpler sentences: Kubrat Venkov Pulev (born 4 May 1981) is a Bulgarian professional boxer. As an amateur he won multiple medals at international tournaments, including gold in the super heavyweight division at the 2008 European Championships.