Question: The Villa Leopolda was once owned by the widow of what former Fiat chairman?
Sentence (from "Marella Agnelli"): Marella Agnelli, born Donna Marella Caracciolo di Castagneto (born 4 May 1927) is an Italian noblewoman, art collector, socialite, style icon and widow of former Fiat chairman Gianni Agnelli.
Relevant evidence: Yes