Question: Do director of film Duel At Diablo and director of film Big Request Concert share the same nationality?
Sentence (from "Duel at Diablo"): Based on Marvin H. Albert's 1957 novel" Apache Rising", the film was written by Albert and Michael M. Grilikhes and directed by Ralph Nelson who had directed Poitier in" Lilies of the Field".
Relevant evidence: Yes