Complex sentence: His father, Vasek Simek, was a Czechoslovakia-born New York theater director and Hollywood character actor whose roles included Soviet premiers, Russian chess players, and ambiguously "foreign" scientists.
Split into simpler sentences: His father, Vasek Simek, was a Czechoslovakian-born New York theater director and character actor in Hollywood. His roles included Soviet premiers, Russian chess players, and ambiguously "foreign" scientists.