Question: What nationality is the director of film Kamay Ni Cain?
Sentence (from "Kamay ni Cain"): Kamay ni Cain ("Hands of Cain") is a 1957 action film directed by Gerardo de León, written by Cesar Amigo and Clodualdo del Mundo Sr., starring Zaldy Zshornack and Fernando Poe, Jr..
Relevant evidence: Yes