Complex sentence: Her parents were Evelyn (Smith) and the screenwriter and film producer Carl Foreman (1914--1984) who moved to England in order to work after being blacklisted by the Hollywood movie studios during the McCarthyism of the 1950s.
Split into simpler sentences: Her parents were Evelyn (Smith) and the screenwriter and film producer Carl Foreman (1914--1984). Her father moved to England in order to work after being blacklisted by the Hollywood movie studios during the McCarthyism of the 1950s.