Complex sentence: St. Moritz was the host city for the Winter Olympic Games in 1928 and 1948, one of three cities to host twice, along with Innsbruck, Austria and Lake Placid in the United States.
Split into simpler sentences: St. Moritz was the host city for the 1928 and 1948 Winter Olympics. It is one of three cities that have hosted the Winter Olympic Games twice, the others being Innsbruck, Austria and Lake Placid, New York in the United States.