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

Ex Input:
Got this at a great deal and loved the movie. It's nice that I can watch it on my iTouch anytime and not on Flixster under restrictions.

Ex Output:
Positive

Ex Input:
Although this is a wonderful working power adapter, I don't believe it is the Macally Adapter that was advertised. I am however happy with it and would shop with this vendor again.Thank you.

Ex Output:
Positive

Ex Input:
The foundation is setup to secretly monitor mankind through its darkest hours. It reminded me a little of Orwell's 1984. In placing humans away from the central government on a planet with few resources. They are forced to develop quickly. This is a novel more about political machinations than about action. The contradictions in human nature are here to analyze. The characters use guile, spirit, & cunning to survive. Some 80% of the book is dialogue & the character development is a bit shallow. Nonetheless, Mr. Asimov portrays the future in poignant & diverse ways. The predicted conflict makes the story of galactic history entertaining, especially since this was written in 1951. Some 7 years before Sputnik was launched. The author deserves praise for his imagination that was well ahead of his time.

Ex Output:
Positive