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

Example Input: I've heard it said that this is Kerouac's greatest novel. I still say that honor is held by On the Road, but this book is just as good. And it is his most spiritual novel. Kerouac combines his talent at writing with his philosophy of life and what you have is a powerful tool to enlightenment. This book should be read on at least two levels, as a work of great literature and as a theological tool. I can't recommend it enough.
Example Output: Positive

Example Input: Now my daughter will not stop aggravating me because we cannot download the pictures off of the dran thing and wants a new camera, so now, I have not only wasted my money, but I have to buy her a more expensive camera that will work that she will break or lose.Thanks so much Vivitar!
Example Output: Negative

Example Input: Before "Foundation" i'd read somes short-storys from Asimov, so i become insterested in his style. And what can i say now about this book? Really is a excelent piece of scifiction: Asimov united 4 independent stories in a book with lifely descriptions, a strong main-story and credibles characters in incredibles situations,...the result is just epic. So, with this book we become in eyewitness on the monumental development and fall of the human civilization... becoming it in a surrounding journey trought our future and past.
Example Output:
Positive