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]: The special effects are what you expect from the Transformers series, but the story line also is unfortunately what you expect. It's just more of the same disjumbled events getting thrown together. Some parts of the movie flow well, and others are just plain ridiculous. It's past time the writers & director for this series either move on or grow up and quit turning every scene into some kind of teenage behavioral prank. They've done the bumbling parents, the stuttering idiot Witwicky kid, the jive talking robots, and the goofball super secret ex-agent to death already. How about having grown adults who are fighting for the planet's survival actually act like it?
[EX A]: Negative

[EX Q]: The DVD is not playable since 1 hour 30 minutes, then the picture becomes stopping and going and keeps that way.
[EX A]:
Negative