Complex sentence: His main task is to present daily main news sports programs, but also works as a commentator for swimming or triathlon events and wrote scripts for several documentaries about cycling, swimming, triathlon and other sports.
Split into simpler sentences: His main task is to present daily sports news programs, and he also works as a commentator for swimming and triathlon events. In addition, he has written scripts for several documentaries about cycling, swimming, triathlon, and other sports.