Question: Tommaso "Tommy" Gagliano was an American mobster and boss whose successor was a longtime loyalist, underboss and founding member of what in the United States?
Sentence (from "Tommy Lucchese"): Thomas "Tommy" Lucchese (pronounced ] ; born Gaetano Lucchese, December 1, 1899 – July 13, 1967) was a Sicilian-born American gangster and founding member of the Mafia in the United States, an offshoot of the "Cosa Nostra" in Sicily.
Relevant evidence: Yes