Complex sentence: At the 1928 Winter Olympics in St. Moritz, four speed skating events were scheduled, all for men, but medals were only awarded for three events, because the 10.000 m event was not completed.
Split into simpler sentences: At the 1928 Winter Olympics in St. Moritz, four speed skating events were scheduled, all for men. But medals were only awarded for three events, because the 10.000 m event was not completed.