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

Ex Input:
This book is not for everyone. It is extremely scary and disturbing. At the same time, it is a fascinating look at the police work and prosecution that brought the murderous Manson Family to justice. The book is hard to put down; the in depth discussion on presenting a criminal case in court and developing evidence to support the case is outstanding. The main complaint is that the book is a few hundred pages too long. The author seems a little too self-promoting, but then again he did get a prosecution on one of the biggest murders in history.

Ex Output:
Positive

Ex Input:
After repeated washings, it still smelled like a toxic plastic and who wants to put toxic plastic inside their body. Also, it didn't do the job. So I wasted my money and had to throw it away.

Ex Output:
Negative

Ex Input:
I first heard Sue Bender on NPR talking about her Amish experience...I was enthralled with it. Later I found the book and read it start to finish in one sitting. As I read it I kept thinking I wanted to buy a copy for all my friends.

Ex Output:
Positive