Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

[EX Q]: The best thing I found in this book is the picture on the cover. Well, actually the uncropped version in chapter 5. Beyond that, I found everything else to be non-practical from a design perspective. A photo of a filthy dust collector area when discussing the advantages of central collection or electrical wiring that would never pass inspection is typical. I'd rather see plan views of real shops that work with reasons for the decisions made.
[EX A]: Negative

[EX Q]: An extremely helpful gem on a complex subject of second century religious authority and textual use. For anyone serious about this period and the interelation of cultures, this book is essential. Is it complex and detailed? Of course, it must be to argue the point. Should you buy it? Yes, unless you want to keep running back to the library. I write this only after thoroughly disagreeing with the review above.
[EX A]: Positive

[EX Q]: I absolutely loved this book, it was so engrossing, could not put it down. Hawthorne has wonderful descriptions, it is a fascinating time in history and he brings it alive. A flawless book.
[EX A]:
Positive