Question: The director of Back to the Future directed another movie in 1994 which was based on a book. Who was the author of the book?
Sentence (from "Kapıcılar Kralı"): Along with Çöpçüler Kralı another movie of Sunal also directed by Zeki Ökten, Kapıcılar Kralı is also featured in the book "100 Yılın 100 Türk Filmi", written by Atilla Dorsay, Turkish film critic.
Relevant evidence: No