Detailed Instructions: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
See one example below:
Problem: I've read this book with much expectation, it was very boring all through out the book
Solution: Negative
Explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Problem: A great racquet for anyone, although it is better suited for the more advanced player. For years, I played with the OS version of this racquet which is noticeably more powerful and is a little more forgiving than the MS version. At this point, I prefer the MS version more just because of the better control and feel.Even now, the Prince Graphite (OS or MS) is still a great racquet, and IMO, one of the best control racquets ever made.
Solution:
Positive