Question: Which film has the director who is older than the other, Machine-Gun Kelly (Film) or Silent Sentinel? 
Sentence (from "Roger Corman"): Admired by members of the French New Wave and" Cahiers du cinéma", in 1964 Corman was the youngest filmmaker to have a retrospective at the Cinémathèque Française, as well as in the British Film Institute and the Museum of Modern Art.
Relevant evidence: No