Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Delivers with the Punch of a Machine Gun!

The definitive biography of "Scarface Al" Capone, who ruled the Chicago underworld with an iron fist during Prohibition. John Kobler is a fine writer whose flair with words will keep his readers glued to the pages, regardless of the subject matter. In "Capone," he masterfully recounts the rise and fall of the Windy City's overlord of vice and crime as only he can, presented in an honest, objective, and straightforward (but never dull) manner. This is a highly entertaining effort which any crime historian is sure to enjoy. My only regret is that Mr. Kobler didn't tackle the biographies of other gangland luminaries as well (although he did an excellent job narrating the history of Prohibition in "Ardent Spirits"). If you must read just one book about Big Al, then this is the one. As far as I'm concerned, you can skip all the others.