Complex sentence: Chizevsky-Nicholls went on to win the 1998 Ms. Olympia, held in Prague, Czech Republic, the first and only time the competition had been held outside the United States.
Split into simpler sentences: Chizevsky-Nicholls went on to win the 1998 Ms. Olympia. The 1998 Ms. Olympia was held in Prague, Czech Republic, the first and only time the competition had been held outside the United States.