Question: Which film has the director who is older than the other, Not My Sister or La Prima Notte Di Quiete? 
Sentence (from "Sonia Petrovna"): Her most famous early acting roles were those of Vanina Abati in" La prima notte di quiete" acting alongside leading French actor Alain Delon and as Princess Sofia in" Ludwig" alongside leading actors Helmut Berger, John Moulder Brown and Romy Schneider, both in 1972.
Relevant evidence: No