Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Example: I've read this book with much expectation, it was very boring all through out the book
Example solution: Negative
Example explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Problem: I really got into belly dance workouts about 6 years ago and purchased this video at that time. I remember hating it and thinking that it was the most worthless video I'd seen. After falling off the belly dance wagon, I now lead a group of women who are learning to belly dance using instructional videos. In going through my collection I revisted this video and realised that it would have made a great introduction to the world of belly dance. I plan on teaching a new group next year and will use this video the first night for those who are interested in the history and basic moves. I am so glad that I gave this video another chance.
Solution: Positive