Complex sentence: Takami Ominami (born November 15,1975) is a long-distance runner from Japan, who won the 2002 edition of the Rotterdam Marathon, clocking a personal best of 2:23:43.
Split into simpler sentences: Takami Ominami (大南 敬美, "Ōminami Takami", born November 15,1975) is an athlete from Japan, whose main event is the marathon. She won the 2002 edition of the Rotterdam Marathon, clocking a personal best of 2:23:43.