Question: Who is the mother-in-law of Victoria Niarchos?
Sentence (from "Philip Niarchos"): Philip Niarchos (alternately: Philippos or Philippe) (born 1954) is a Greek billionaire, the eldest son of the Greek shipping magnate Stavros Niarchos and Eugenia Livanos, herself the elder daughter of Stavros Niarchos' rival Stavros G. Livanos.
Relevant evidence: Yes