Question: Who is Lia Vissi's sibling-in-law?
Sentence (from "Lia Vissi"): Olympia "Lia" Vissi (born 15 May 1955) is a Greek Cypriot singer, songwriter, composer and politician who most notable for her two participations in the Eurovision Song Contest and being older sister of Greek Cypriot singer Anna Vissi.
Relevant evidence: Yes