Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The Ultimate Gangster Guide

Anybody with the slightest interest in the gangsters from the 1920's -1930's will dig this book. The authors run the criminal gamut; if he or she was a bank robber, kidnapper, bootlegger, Mafiosi whatever, they are in here. Anyone new to this genre can benefit greatly from the Almanac. Read it, decide who you want to learn more about and then check out the bibliography at the end for a complete list of all true crime books relating to this era complete with concise reviews to help you choose wisely. A must for researchers.