Complex sentence: He won the silver medal in the 5,000 metres at the 1987 World Championships, the 1995 edition of the Paris Marathon, clocking 2:10:06, and the Rotterdam Marathon of 1997, in his personal best of 2:07:51.
Split into simpler sentences: He won the silver medal in the 5,000 metres at the 1987 World Championships. As a marathoner, he won the 1995 edition of the Paris Marathon, clocking 2:10:06, and the Rotterdam Marathon of 1997, in his personal best of 2:07:51.