Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor sentence structure and confusing text ruin this book.

A terrific subject, with a great deal of research done by the author. However, it is hardly readable! The author wrote the longest, most drawn out sentences I have EVER read. The result is confusion. The author is unable to complete one thought at a time and as a result, neither can you. I rate this one a snoozer. A good sleeping pill. Too bad. I was really looking forward to reading it. He should fire his editor.