Complex sentence: Born in Cairo, Egypt, her father was the teacher, traveller, author and adventurer Denis Hills and her mother was Dunia Leśmian, daughter of Polish poet Bolesław Leśmian.
Split into simpler sentences: Born in Cairo, Egypt, Hills was the daughter of teacher, traveller, author, and adventurer Denis Hills. Her mother was Dunia Leśmian, daughter of Polish poet Bolesław Leśmian.