Question: Who is the father of the director of film Demented (1980 Film)?
Sentence (from "Demented (1980 film)"): The plot involves a woman who, having been raped by a gang of men and institutionalized, suffers nightmares while under the care of her unfaithful husband, and takes a violent revenge when a group of teenage youths decide to play a prank on her.
Relevant evidence: No