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: I recall this recording on LP in the early fifties. It conveys the humour and genius of Mozart with great singers although other than Steber they were not previously identified with WM.
Example Output: Positive

Example Input: A very good read, this novel is more "complex" in the character development then Tai Pan or Noble House. But the plot centers on an anti-hero, and shows the darker side of capitalism. A sharp break from the heroic figures of industry that I personally loved in Tai Pain and Noble House. After finishing the book you may be a little upset and wondering "what the point was the novel trying to get across?" I honestly don't know, the ending leaves you trying to figure things out on your own. But that's the beauty of the book at the same time as its biggest fault. This is a book you appreciate more and more after finishing it.
Example Output:
Positive