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 is the only thing my son wanted for Christmas. I was hesitant because I thought it was a bit pricy. But I didn't want to disappoint my son so I bought it. True, the look on his face was worth the money the toy was not. It took a really long time to put the thing together and it has to lean up against a wall to stand. When he uses any of the supposedly "cool" features another piece falls off. My son has a long attention span and can play with a toy for a half an hour before moving on to something else. This toy frustrates him after just a few minutes.
Solution:
Negative