Complex sentence: He was born in the former British Mandate of Palestine in 1931 and is the publisher of Quartet Books (founded in 1972 by Ken Banerji, John Boothe, William Miller and Brian Thompson, and taken over by Attallah in 1976).
Split into simpler sentences: He was born in the former British Mandate of Palestine in 1931. He is the publisher of Quartet Books (founded in 1972 by Ken Banerji, John Boothe, William Miller and Brian Thompson, and taken over by Attallah in 1976).