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: this charger does not have enough power to charge my Powerbook G4 while it is running. it will show the charger indicator back and forth from battery power to charging.But when I charge while it is off, it works perfect.I had requested a replacement once and the result was still the same.
Solution:
Negative