Complex sentence: Teun Koolhaas is the father of actress Betje Koolhaas, and the older brother of the author and screenwriter Anton Koolhaas (the father of architect Rem Koolhaas).
Split into simpler sentences: Teun Koolhaas is the father of actress Betje Koolhaas. His father was the older brother of the author and screenwriter Anton Koolhaas (the father of architect Rem Koolhaas).