Instructions: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Input: Great book, techniqes you can use! I love this book, the moves cause pain, but no injury. I really like section on finger locks. I did not have a problem with this book, the pictures were great. If you are in the martial arts, or looking in to them, GET THE BOOK.
Output:
Positive