Question: What is the date of death of the director of film Descendants Of Cain (Film)?
Sentence (from "Yu Hyun-mok"): Yu attended the San Francisco International Film Festival in 1963, where "Variety" called "Obaltan" a "remarkable film", and praised Yu's "[b]rilliantly detailed camera" and the film's "probing sympathy and rich characterizations."
Relevant evidence: No