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: Are your cats getting sick? Mine were vomiting and I finally traced it back to the salmon cat food.  But it's not the salmon, it's the dye they put in the salmon. Some cats simply can't tolerate it.  Three of my seven were that way.  If you see this happening, there's a pretty good chance that your cat has an intolerance to the dye as well.
Example Output: Negative

Example Input: While I typically like the Happy baby products, I was very disappointed with this product. Unfortunately when I opened the first of six containers it smelled stale as if it had been sitting on the shelf for a very long time. I decided to mix up a bowl but after tasting a bite, it confirmed my initial thought--it was old despite the expiration date. My guess is that I received a bum batch however, I am not willing to try it again when there are other organic cereals I have been happy with.  I will say I was extremely pleased with Amazon's customer service. Although this item was non-returnable, they still issued a refund to me promptly.
Example Output: Negative

Example Input: This is the worst flavored coffee I have ever tried.  There is no aroma or flavor of Chocolate/Raspberry to this coffee bean at all.  In fact the coffee tastes sour.  I too am sorry I couldn't buy just 1 lb. to try it first -- Now I am stuck with this awful coffee I cannot return.  SO, BUYER BEWARE -- NO RETURNS!
Example Output:
Negative