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

Ex Input:
I play Hand and Foot every other week and the four of us love using these. You get 13 cards and it is very handy to have.

Ex Output:
Positive

Ex Input:
Very intuitive in explaining the basic concepts and the fundamental and widely used methods in continuous-time finance. No deep background in math is required to have a good grasp of this book. I believe it is intuition rather than fancy skills that is important to build up interest and passion for studying a hard topic such as continuous-time finance.

Ex Output:
Positive

Ex Input:
I purchased this product just a few months ago and it's broken already. It was used at a desk with ear phones so it wasn't moved,bounced or anything you would expect a personal player to withstand.It skipped at the slightest bump and went through batteries like crazy.I now have a different CD player and would not recommend this to anyone.

Ex Output:
Negative