Question: Who is the son of the man to whom Marie-Thérèse Walter was a mistress?
Sentence (from "Bust of a Woman (Marie-Thérèse)"): Bust of a Woman (Marie-Thérèse) is a 1931 sculpture by the Spanish artist Pablo Picasso that depicts Marie-Thérèse Walter, who was Picasso's mistress at the time of its creation.
Relevant evidence: No