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: I bought one of these adapters about a year ago to replace the original apple charger that came with my ibook G4. The Macally worked fine for about a year then died; since it lasted as long as the pricier apple one, I decided to go ahead and get another one. The new adapter - which is listed as exactly the same product I bought the first time - is physically different, and I think is not really compatible with the ibook G4; the charger doesn't always connect firmly to the laptop. And it could be a coincidence, but in the month since I have had it my computer has started having sudden power failures when running off a/c power (but has no problems running off battery). I guess I will be shelling out for the apple adapters in future - this one seems too risky.
Solution:
Negative