Question: Who is the son of the man to whom Marie-Thérèse Walter was a mistress?
Sentence (from "Olga Khokhlova"): Olga Picasso, born Olga Stepanovna Khokhlova (Russian: О́льга Степа́новна Хохло́ва , June 17, 1891 – February 11, 1955) was a Russian ballet dancer, but better known as the first wife of Pablo Picasso and the mother of his son, Paulo.
Relevant evidence: Yes