Question: What is the date of birth of the director of film The Drums Of Jeopardy (1931 Film)?
Sentence (from "The Drums of Jeopardy (1931 film)"): The name of the villain in the novel was originally called Boris Karlov, but when the actor Boris Karloff rose to prominence circa 1923, the character's name was changed to Gregor Karlov in the 1923 silent film adaptation to avoid confusion.
Relevant evidence: No