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

Example Input: Not what I expected, the first Transformers was the best. The special effects was great but acting was not, too bad.
Example Output: Negative

Example Input: Yes, all the reviews are correct: This is an excellent writer detailing some of the most gruesome killings of all time. It is the fastest 650 pages you will ever read, I gaurantee it.One note: This book might also be called "Vincent Bugliosi: The Man Who Brought Down Charles Manson And Lived to Tell About It." That is to say, Bugliosi is evidently proud (rightfully so) of his accomplishment as the lead prosecutor on the case. And he pretty much makes mincemeat out the intellect of the LAPD and the defense attorneys involved. But like any good prosecutor (and Bugliosi is most certainly that) he has quite a bit of evidence to back his charges of ineptitude. If I were Kanarek, or a Tate detective, I'd be pretty embarrassed knowing this book is an all-time bestseller.But who are we kidding, this is the definitive book on Tate-Labianca. A truly fantastic read.
Example Output: Positive

Example Input: Honestly, if you knew about the blu-ray format and the capacity 1 disc has you should be appalled that there isn't the entire peanuts collection on 1 disc. This is such a obvious marketing plot to extort more money out of the consumer. If you buy this disc you are only feeding into that disgraceful behavior. If you don't know, blu-rays can hold more than 10 times the amount of content a DVD can hold. The entire peanuts movie collection can fit on to one blu-ray disc and to seperate them over 10+ discs just takes more money from you to send their fat kids to college. A pox on both your houses.
Example Output:
Negative