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

[EX Q]: This book is not for everyone. It is extremely scary and disturbing. At the same time, it is a fascinating look at the police work and prosecution that brought the murderous Manson Family to justice. The book is hard to put down; the in depth discussion on presenting a criminal case in court and developing evidence to support the case is outstanding. The main complaint is that the book is a few hundred pages too long. The author seems a little too self-promoting, but then again he did get a prosecution on one of the biggest murders in history.
[EX A]: Positive

[EX Q]: I am a huge fan of the Tomb Raider series, and have played all five other games on my PC. I love them. I was so excited to get this one, and sooooo disappointed with the quality. Glitchy glitchy glitchy. Do not buy this game. The controls are terrible. While all other 5 games play out smoothly, this one is slow, stalls, goes blank some times, and takes minutes to load to new chapters. Now I don't have a fancy schmancy computer, but I have been able to play all the other games on it just fine without any hitch. This is just crap. It makes me feel like I have to go buy a $2000 computer just to be able to play this $30 game! It probably runs better on a PS 2, so if you have one of those don't bother with the PC version. Thanks a lot Eidos, I totally wasted time and money and am warning future buyers to BEWARE!
[EX A]: Negative

[EX Q]: and what is with the foot?Usually a preview should (as far as I know) show a good example that will motivate people to watch moreof it and this just isn't it...I haven't viewed the video or part you can download as yet but if this picture is an example of what it contains I am not too inclined to view more of it...what are these two fencers doing?is the one on the right attacking with a foot in the air,next arm and point way off target or are they retreating ?and if so what the .. are they doing? Balance?!?and the fencer on the left - are they attacking? bent arm? what is with the front foot?ok so maybe need to download it and view it but I have enough faults in my technique without viewing this....sorry was just looking up fencing on amazon and found this video download...sighand if you are wondering I have over 20 years of fencing - all three weapons and I like to think (some... may disagree...lol) that I am an ok fencer...
[EX A]:
Negative