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

Example Input: I am a huge fan of science fiction and fantasy, and have been reading these books for 20 years. I picked up the Foundation books because Asimov was supposed to be so great, and I really enjoyed his short stories. This book - all of the books in this series - is so amazingly boring it could be used to replace Thorazine. The concept was solid, but the characters made me not care at all. I kept hoping they would die simply so there would be something interesting happening. If you must read it, check it out from the library and save your money. Unless of course you're a chronic insomniac; then, by all means, buy this book.
Example Output: Negative

Example Input: From a woman who sold out her body ages ago and now attempts to be a partisan hack, and poorly at that. Why anyone would want to wipe their feet on this dirty carpet is beyond me. Not worth the time it took to phone in sex.
Example Output: Negative

Example Input: This is a pretty cool set. The only thing wrong is that is should be a little taller like in the movie. This set really recreates the tower in the movie. The only thing wrong is the door. It should be like a prison door like in the movie, not a wooden one. Some good things about this is only one of two sets that have buckbeak, one of four sets that have a dementor, and only one of two sets that have Sirus Black. I RECOMEND THAT YOU BUY THIS!!!
Example Output:
Positive