Read the following paragraph and determine if the hypothesis is true:

Salvatore "Mooney Sam" Giancana (born Salvatore Giangana; June 15, 1908 June 19, 1975), better known as Sam Giancana, was a Sicilian American mobster, notable for being boss of the Chicago Outfit from 19571966. Among his other nicknames were, "Momo", "Sam the Cigar," and "Sammy."

Hypothesis: Giancana was a mobster and a businessman
It's impossible to say