Question: Who is the mother-in-law of Victoria Niarchos?
Sentence (from "Victoria Niarchos"): She is a daughter of "Patrick" Benjamin Guinness (1931-1965) (himself half-brother of the Aga Khan IV) and his wife (and stepsister), the former Dolores Guinness, "Dolores" Maria Agatha Wilhelmine Luise, Freiin von Fürstenberg-Hedringen (1936-2012), herself the daughter of the Mexican socialite Gloria Guinness (1912-1980) and Count Franz-Egon von Fürstenberg-Herdringen (1896-1975).
Relevant evidence: No