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: We have been giving our 100 pound shepherd/lab/collie/husky mix Hip Action since he was a pup. Our vet believes this is realy going to help him prevent all the hip problems that shepherd's usually have. Eventhough I cannot buy it locally, I make sure to buy it on line so my boy will remain healthy and happy!
Example Output: Negative

Example Input: I have been enjoying this product for some time.  I buy it at Wegmans grocery store, I believe the cost is under $4.00 a box.  If you like black licorice you will love this product.
Example Output: Positive

Example Input: EDIT: I had been giving my dog a half of one of these every day, and he was having digestive issues with them. I stopped giving them to him and he recovered. I will have to lower my rating on these, even though he loves the taste.  I have a havanese dog. He is very picky about treats and food. He LOVES these things. He goes crazy for them. He sometimes won't even eat his regular food (EVO Chicken small bites) because he wants one of these first. I'm not sure if they are actually helping his teeth though. His teeth are looking kind of gnarly and he is only 3. I don't mind the smell of these treats either.
Example Output:
Negative