Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
One example is below.
Q: I've read this book with much expectation, it was very boring all through out the book
A: Negative
Rationale: Review writer does not like the book because it was boring, therefore it is a negative review.
Q: If you happen to misplace the factory charger, this is the exact replacement you need for the cameras listed. There were no flaws in the product, and it came in safe packaging.The only problem is cost, but I wouldn't use an aftermarket charger so I was prepared to pay for the real thing. If you lose your Canon battery charger, go ahead and order this.
A:
Positive