Definition: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Input: This is the first time I buy a product from this provider and I will never do it again, they sold me a charger without a box and that looks kind of used, when I try to charge my batteries they never did it. After a couple tries I went to a local dealer and got a brand new that made a great job in a couple hours.
Output:
Negative