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

Example Input: This is my mom's account. I had the pleasure of reading this book in English this year. I can honestly say, it is the single most boring book I've EVER read. You will NEVER find someone my age that enjoys this story. It has no action! No suspense! It isn't deep! Things don't symbolize anything. If they do, then you're thinking too hard. This book is not a classic. It is the worst. I'd recommend copying a dictionary before I'd ask you to read this pile. DO NOT EVEN THINK OF BUYING THIS.
Example Output: Negative

Example Input: The book covers several generations, so with each generation you have to re-learn all the characters. It is difficult to keep track of who's who when every time you get to know the cast, 200 years suddenly pass and we're in the middle of a new crisis. I didn't read the whole series because of this -- it was obnoxious.
Example Output: Negative

Example Input: Nirvana should be ashamed of having this released. If it's the best of the box then the rest of the box must be overdriven drunken slobbering screams accompanied by smashing guitars and kicking drums. If you like unprofessional recordings you will love these. My guess is these were recovered from the trash somewhere to make a quick buck. Although if they are demos it's a wonder Nirvana got anywhere.
Example Output:
Negative