Complex sentence: Patricia Paz Maria Medina (19 July 1920 -) is an English actress of middle class parents, who in the late 1930s and worked her way up to leads in the mid- 40s, whereupon she was promptly summoned to Hollywood.
Split into simpler sentences: Patricia Paz Maria Medina (19 July 1920 -) is an English actress of middle-class parents. She began acting late in the 1930s and worked her way up to leads in the mid- 1940s, whereupon she was promptly summoned to Hollywood.