Question: Vincent Drucci was a member of the North Side Gang which was the best known rival of the crime boss known by what nickname?
Sentence (from "Al Capone"): Alphonse Gabriel Capone ( ; ] ; January 17, 1899 – January 25, 1947), sometimes known by the nickname Scarface, was an American mobster, crime boss and businessman who attained fame during the Prohibition era as the co-founder and boss of the Chicago Outfit.
Relevant evidence: Yes