Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Example input: I've read this book with much expectation, it was very boring all through out the book
Example output: Negative
Example explanation: Review writer does not like the book because it was boring, therefore it is a negative review.
Q: My son loves Batman and was looking forward to playing with this toy. My son is very bright and we could not figure out how to put this toy together properly. It kept falling apart and the directions were very confusing. Please do not waste your money. I wasted 45 dollars on a toy that I couldn't even put together!
A:
Negative