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: I was quite skeptical about stevia at first, but tried it with another brand and thought there wasn't much difference in taste and I felt better about using a more natural product than the other artificial sweeteners out there. I then started looking at getting a bulk container and happened upon this product. I now have purchased this same product 4 times and am quite pleased. The product is a bit more concentrated and we are using less of the product in our drinks and cooking than other competitors.  The deliveries are always quick and we have not had any issues at all with the product or packaging.
Example Output: Positive

Example Input: This toy lasted about ten minutes.  First one i purchased had a rope tug, which my pup quickly chewed through, rendering the toy useless.  I bought another one after i saw that they had changed the rope portion to a rubberized "rope" and it seemed like a better solution.  Wrong! The rubber rope took my dog (who is not much of a chewer) about two minutes to completely chew into small pieces, again leaving her with nothing but a purple plastic jug.  Product is a great idea if they can figure out what will work better as the "tug" mechanism, but as is (both versions) are just poorly made and a waste of $$$$.
Example Output: Negative

Example Input: It might be a matter of taste, but this is the worst cup of coffee I ever attempted to try. My spouse and I tried three sips and dumped it.
Example Output:
Negative