Complex sentence: He competed in the 2004 Summer PAralympics where he won a silver in the shot putt, he followed this up in the 2008 Summer Paralympics in Beijing, China where he won a second silver medal in the men's F57-58 shot putt event.
Split into simpler sentences: He competed in the 2008 Summer Paralympics in Beijing, China. There he won a silver medal in the men's F57-58 shot putt event.