In this task, You are given a review of Amazon's food products. Your task is to divide them into two classes: negative or positive, depending on the content of the review.

Example Input: Super disappointed that i ordered and never receive this product, had to end up canceling because it took over 3 weeks to even be shipped. Wont buy again from this vendor.
Example Output: negative

Example Input: If you already have the DeWalt batteries his is a great addition. This fan is so convenient to use that I end up using it all the time. It moves an impressive amount of air while at the same time is quiet. A 6Ah battery runs for over 10 hours on high.
Example Output: positive

Example Input: My family been using for years now and we still order them once we ran out of it. Great for face cleansing in the morning and doesn't leave your skin dry. Ordered this for my mom back in Taiwan since it's cheaper here. Great product!
Example Output:
positive