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

[EX Q]: The subject is trivial and boring. The writing skill mediocre.I was stuck in Sri Lanka and downloaded it by mistake when learning how to use my new kindle. Decided to take a look.Sorry, perhaps just not my type of book. It is no literature.
[EX A]: Negative

[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]: As other reviewers have stated, these curtain rods will not sustain much weight at all. They really aren't spring rods - you just twist it into place.I ordered 3 and they were so poorly packed that two of them were bent and completely unusable.I wouldn't bother with these, or buy them from Country Curtains because you can get an anchor so that they can hold more weight and be more stable. Of course, their $30 each instead of $19!!!!
[EX A]:
Negative