Question: What was the name of the Mafia faction headed by the person responsible for the assassination of Placido Rizzotto?
Sentence (from "Placido Rizzotto"): Placido Rizzotto (Corleone, January 2, 1914 – March 10, 1948) was an Italian socialist peasant and trade union leader from Corleone, who was assassinated by Sicilian Mafia boss Luciano Leggio.
Relevant evidence: Yes