Question: Who worked for Scarface and is a suspect in the St. Valentine's Day Massacre? 
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