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: This stuff tasted like pipe tobacco smells. My Son didn't like it either and I ended up throwing it out.
Example Output: Negative

Example Input: I fed this to my Golden Retriever and he hated it. He wouldn't eat it, and when he did, it gave him terrible diarrhea. We will not be buying this again. It's also super expensive.
Example Output: Negative

Example Input: I've been feeding liver biscotti for years. I was looking for a healthy treat without additives for my epileptic dog (additives can be a seizure trigger) and liver biscotti filled the bill. The ingredients are top-quality. The bite-size bits are perfect for training and don't muck up your pockets. The bite-size portions also make it possible to give rewards without adding pounds, which is a problem with other treats. And for dogs with wheat and other sensitivities, there is an anti-allergenic recipe. Enthusiastically recommended!
Example Output:
Positive