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

Example Input: Hawthornes The Scarlet letter is an okay book. It has an okay plot and okay characters, but the book is not one for teens of the 90's. I had to read this book for my English teacher and to tell the truth if it were not graded I would not have read it. The teens of today do not want to read about the ancient customs of puritan society. If it had been about the scandalous affairs of Hester and Rev. Dimmsdale it would still be a best seller. I think this book should be only read voluntarily. If you are thinking of reading it you may need to reconsider.
Example Output: Negative

Example Input: Works fine on the PowerBook G4. Doesn't have an LED to tell you it's on and, of course, doesn't have a smart plug to show charging status.
Example Output: Positive

Example Input: I fell in love with Brasilian jazz my first trip to Rio. I've been there many times and was always amazed, visiting the little clubs, listening to a lot of great players. I don't remember how I found this guy, but, understanding music 'from the heart', Leo understands, and plays it that way. In my view, he is one of the most sensitive sax players I've ever heard - check out #3 on Black Pearls, you'll see what I mean..... I think it would be a great project for Leo to hook up with Bob James and Fourplay, and let Leo play, I mean feature him, write and produce songs that bring out his talent, give him lots of freedom. I rated this 4 stars, simply because of a couple of songs I skip pver, but all in all, it's great listening. And as a bassplayer, I've spent hours playing along with him.
Example Output:
Positive