Instruct: Classify Amazon reviews into positive or negative sentiment
Query: "Best Pocket Guide Ever Written on Maintenance Repair"

"Industrial Machinery Repair is a must reading for all maintenance personnel and management. It clearly shows how to improve equipment reliability and performance. Ricky Smith does a wonderful job at making the complicated day-to-day maintenance issues very plain and simple. If you are serious about maintenance in your organization, then you must read Industrial Machinery Repair."