Instruct: Classify an Amazon review into positive or negative sentiment.
Query: A great book ...

Just a superb book! Not a bit of deviationism! Excellent for use in re-education! The author is a true member of the vanguard of the proletariat! A University Professor who is also a horny handed son of toil ... Herb is a guy who looks at the facts and sees the dialectical truth as laid out by Moscow!William Z. Foster