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

Example Input: I was extremely disappointed with the fabric and color when it came. It is obvious that it is of poor quality but I guess you get what you paid for 10 bucks.The zipper of the plastic cover of one set was broken.I bought 2 queen sheets and I wanted to return both purchases if only I did not have to pay for shipping.Do not buy this!!!! You will regret it.
Example Output: Negative

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: It makes so much easier to hold my cards and my friends like them very much. Thanks for selling this product.
Example Output:
Positive