Complex sentence: Yuri is a 15-year-old Russian figure skater and a rink mate to Victor Nikiforov, Yuri is a figure skating prodigy since he was young and has won three consecutive junior world championships.
Split into simpler sentences: Yuri is a 15-year-old Russian figure skater and a rink mate to Victor Nikiforov. Yuri has been a figure skating prodigy since he was young and has won three consecutive Junior World Championships.