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

Example Input: Stories from central americal often seem surreal. How could it be that people so rich can live in such close proximity to those so poor? How could people motivated by such high principals commit such barbaric acts of violence? Insulated and liberal in America we so much want to empatize with the poor when in fact we have so much in common with the rich. I found this book so very compelling in that it provided much empathy for all sides of this conflict. One could not demonize any party. Instead I watched helplessly as the events unfolded and greived each needless loss. I recommend this book for your soul as your heart needs the exercise.
Example Output: Positive

Example Input: Recently I ordered 'Stopped at Stalingrad' from amazon.com. It was well worth the puchase, as the book is both a profoundly researched study and an interesting read. It's a scholarly work which, undoubtedly, will become a classic in its field.Denes Bernad, Aviation Historian and Author
Example Output:
Positive