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

Example Input: I received the message that the U. S. government is hiding knowledge about what is beyond Earth's atmosphere. But all governments hide information from the masses of their people. What intrigued me was when the Sentinel Prime character said to the Optimus Prime character that they used to be gods and now they were called machines. I can relate to that statement. I am a descendant of a people that were performing high sciences at one point in time and now we are beasts of burden. Try to talk to a typical African person about science and see what you get. At best they'll say, how does this help me pay my bills? At worse they'll look at you like you have 2 heads.
Example Output: Positive

Example Input: If you paid for this product, you overpaid. Granted, the original, out-of-print dvd of The Bikini Carwash Company sells for exorbitant prices, so my suggestion is to just download it for free through torrents and cut the video pirates and video scalpers down to size. If anything, buy the European PAL version, which is also uncut and uncensored, and available on the North American Amazon as well.
Example Output: Negative

Example Input: I attended a small buisness class at my local community college, this book was used as our text-book. I found it to be very informative and easy to read. The section concerning Business Plan development was very helpful. I recomend this book to anyone trying to find their way through the myrad of information available when starting a small business. The book is very down to earth, in every chapter there are at least 2 real world examples or case studies for the student to compare to his or own experience
Example Output:
Positive