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

Example Input: This is nothing new from Gail Howard, or at all. These wheeling systems can be worked out mathematically, without paying for this book. There are also lots of websites that offer number generators and wheeling system explanations for free. If you want it all spelled out for you then buy this book, but if you are willing to do a little mathematical work check out lottery information website like [...].
Example Output: Negative

Example Input: this book rocks, people! however, i got reali confused withnyala's character. what's up with her aniway? split personality?aniway, i reali loved rashel and quinn though they were always at each other's throats!! enjoy this book! p.s : if u're reading these reviews to decide whether it's worth ur money, i tell ya, get it QUICK before it's all gone!
Example Output: Positive

Example Input: Can not get the pictures off the camera. Keeps saying faliure when try to download or go to website.
Example Output:
Negative