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: While I am not a big fan of this costume, my four year old liked it and that's all that matters. She wore it almost every day before Halloween and she felt so proud to say to others she was going to be a super hero for Halloween. She definitely has enjoyed it, the price was great so I am happy with this purchase.
A:
Positive