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 had TWO of these products sent to me and BOTH of them were inoperatable and the packaging on one of them was open...ughhhh...VERY disappointed not to mention frustrated!
Solution: Negative