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

Ex Input:
This product does not work with my ibook G4. As stated by some earlier reviews by other customers, the charger toggles between charging and not charging. Occasionally, if it is left on, it will continuously charge. I thought about keeping it, but it is unreliable and there are other third party options for $10 more.This one is going back to Amazon.

Ex Output:
Negative

Ex Input:
I attended a small buisness class at my local community college, this book was used as our text-book. I found it to be very informative and easy to read. The section concerning Business Plan development was very helpful. I recomend this book to anyone trying to find their way through the myrad of information available when starting a small business. The book is very down to earth, in every chapter there are at least 2 real world examples or case studies for the student to compare to his or own experience

Ex Output:
Positive

Ex Input:
I have been taking Belly Dance lessons for several years. I found this tape very helpful and the instructions clear. I think the intent of the tape is to introduce certain movements and let the viewer be creative. So if you are looking for a full workout you will not get it from the tape. You have to make your own. But that is one of the beauties of the tape. If you want to dance in the privacy of your home or if you are thinking of taking lessons, I think this would be great for you. It is a very gentle tape. Do not be fooled by the 1996 date listed here. That must be the reprint date, my tape said 1985 which explains the dated hair and makeup. Atea is not the most animated speaker but I think that is in line with gentle nature of the tape. I think the tape is very much in the spirit of belly dancing as it encourages the viewer to use her own style.

Ex Output:
Positive