Complex sentence: Henry Maske (born January 6,1964 in Treuenbrietzen) is a former German boxer, who was one of the most popular German sports figures, not only because of his success but also because of his exemplary mannerism and outstanding fair play.
Split into simpler sentences: Henry Maske (born January 6,1964 in Treuenbrietzen) is a former German boxer. Maske was one of the most popular German sports figures, not only because of his success but also because of his exemplary mannerism and outstanding fair play.