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

Q: The Decepticons play the Autobots like a used violin and demostrate Cybertron's AI still has a long way to go. While LaBeouf and Turturro act as if this movie is their character's last episode --- and they really over-act in this movie which is lacks the charm of the original TV cartoon.

A: Negative
****
Q: The book covers several generations, so with each generation you have to re-learn all the characters. It is difficult to keep track of who's who when every time you get to know the cast, 200 years suddenly pass and we're in the middle of a new crisis. I didn't read the whole series because of this -- it was obnoxious.

A: Negative
****
Q: Seems to be a nicely designed and manufactured air bed. We've used it for guests a few times, and are pleased with it.

A:
Positive
****