Complex sentence: Bukin began figure skating at age seven, entering Children and Youth Sports School of CSKA in Moscow, their group trained at a small stadium in Chapayevsky Park near Pesochnaya Square.
Split into simpler sentences: Bukin began figure skating at age seven, entering the Children and Youth Sports School of CSKA in Moscow. The group trained at a small stadium in Chapayevsky Park near Pesochnaya Square.