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: We bought this for our 5 year old for Christmas. The elevator uses a string pulley which promptly bound around the gear that connects it to the thumbwheel which raises and lowers the platform. Within 5 minutes of playing, one of the main features broke. Also, the top has a ring with 5 rockets, one of these came missing a retaining pin. Thoroughly disappoingting as he is a big Justice League fan.
A:
Negative