Complex sentence: The competition, held from 8 to 23 February, was won by the Unified Team--its only appearance, comprised of some newly emerged nations from the former Soviet Union, which had dissolved just weeks before the Games began.
Split into simpler sentences: The competition, held from 8 to 23 February, was won by the Unified Team in its only appearance. The team was composed of some newly emerged nations from the former Soviet Union, which had dissolved just weeks before the Games began.