Question: Italaian billionaire and owner of the third  biggest chocolate producter and confectioner company is the widow of who?
Sentence (from "Ferrero SpA"): It was founded in 1946 in Alba, Piedmont, Italy, by Pietro Ferrero, a confectioner and small-time pastry maker who laid the groundwork for Nutella and famously added hazelnut to save money on chocolate.
Relevant evidence: No