Question: What is the date of death of the director of film Secret Of Stamboul?
Sentence (from "Secret of Stamboul"): Secret of Stamboul, also known as The Spy in White, is a 1936 British thriller film, taken from the novel "The Eunuch of Stamboul" by Dennis Wheatley, directed by Andrew Marton and starring Valerie Hobson, James Mason and Frank Vosper.
Relevant evidence: Yes