Jimmy Fratianno
...that Jimmy Fratianno was the highest-ranking member of the Mafia to become an informant for the U.S. government until Sammy Gravano in 1991?
...that <b id="mwAyI"><a href="./Jimmy_Fratianno" id="mwAyM" rel="mw:WikiLink" title="Jimmy Fratianno">Jimmy Fratianno</a></b> was the highest-ranking member of the <a href="./Mafia" id="mwAyQ" rel="mw:WikiLink" title="Mafia">Mafia</a> to become an <a href="./Informant" id="mwAyU" rel="mw:WikiLink" title="Informant">informant</a> for the <a href="./Federal_government_of_the_United_States" id="mwAyY" rel="mw:WikiLink" title="Federal government of the United States">U.S. government</a> until <a href="./Sammy_Gravano" id="mwAyc" rel="mw:WikiLink" title="Sammy Gravano">Sammy Gravano</a> in 1991?