Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent Book for Architects

Rocky's book is a MUST HAVE!His no-nonsense approach is straight forward and down to business. No fluff here, just PLENTY of meat.His concepts are clear, precise and right on target.Even if you are not currently design the next generation killer ENTERPRISE APPLICATION, his advise and knowledge are invaluable.key words: INVALUABLE & MUST HAVE !