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

Now, solve this: Our 8 year old son ACHED for this toy for his birthday and although we thought it to be expensive junk, we wanted to see him happy. The FIRST one we returned thinking it was broken but soon realized with the SECOND one that we just weren't shaking it hard or long enough. After a week of trying to figure this thing out, the screen has gone fuzzy and even a new battery could not revive it. Even our 8 year old is disgusted and frustrated with the quality of this toy. It is going back tomorrow - at our son's request. If your little boy wants this toy, please show him this review and suggest he pick something else. It's just an expensive disappointment. Please read the review by Diane. She says it so much better than we ever could.
Solution:
Negative