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

Example Input: With the type of closures and the amount of compression it is meant to give it's really difficult to put on. You need a hand to pull it closed in order to actually be able to close each of the 20 some odd hooks.
Example Output: Negative

Example Input: This book has solved the problems we had while trying to manage my son's diabetes.You can find all answers in diabetes management.
Example Output: Positive

Example Input: A glorious acheivment in the history of American Film. Passionately directed and gorgeously photographed, with impeccable acting from Day-Lewis, Binoche and Olin. "Unbearable" will linger in your head for weeks after watching it. And it's one of the few movies to use animal death in a non-cheap fashion: The death of Tomas and Tereza's dog is riveting and beautifully performed. Contrary to some opinions, the book is not better than the film; it's an entirely different entity structured in a seemingly unfilmable, non-linear fashion. As a written story, it doesn't make the kind of dramatic sense it does on screen. What Kaufman pulls off with "Unbearable" is truly remarkable.
Example Output:
Positive