Complex sentence: Karsten Kobs (born September 16 1971 in Dortmund) is a German hammer thrower, who's personal best throw is 82.78 metres, achieved in June 1999 in Dortmund.
Split into simpler sentences: Karsten Kobs (born September 16 1971 in Dortmund) is a German hammer thrower. His personal best throw is 82.78 metres, achieved in June 1999 in Dortmund.