sentences:  Pantaleone came from a relatively well off family and was trained as a land surveyor.Initially a leading member of the Italian Socialist Party ("Partito Socialista Italiano", PSI) in Villalba he later switched to the Italian Communist Party ("Partito Comunista Italiano", PCI).Pantaleone was born in Villalba, into a local family of professionals whose republican traditions opposed the power of Mafia boss Don Calò Vizzini, who was a staunch catholic as well.