Complex sentence: Joy Cavill (1923--1990) was an Australian writer and producer who worked in radio for a number of years before breaking into films as continuity person on "King of the Coral Sea" (1954).
Split into simpler sentences: Joy Cavill (1923--1990) was an Australian writer and producer. She worked in radio for a number of years before breaking into films as continuity person on "King of the Coral Sea" (1954).