Question: What is the date of death of the director of film Love Letters Of A Portuguese Nun?
Sentence (from "Love Letters of a Portuguese Nun"): Love Letters of a Portuguese Nun  is a 1977 West German-Swiss film directed by Jesús Franco and produced by Erwin Dietrich, loosely based on the "Letters of a Portuguese Nun" attributed to Mariana Alcoforado.
Relevant evidence: Yes