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.

Ex Input:
Our cocker spaniel is now nearly 10 years old, and the solid gold food I'd been feeding him suddenly changed its formulation over a year ago(with no notice on the packaging), and he became subject to unexplained stomach upsets. After the contaminated food scare even tho Solid Gold was not recalled, I decided to switch, and this formulation is perfect for him to not gain too much weight. Newman's own is a brand I totally trust and have bought snacks for my human baby as well for years. After a year on this food, my dog is doing fine, but I do notice a need to supplement with fish oil for a healthier coat. That may be age related as well. But the stomach upsets have stopped. And I feel better knowing I am not exposing him to additional pesticides and hormones by going mostly organic with this formula.

Ex Output:
Positive

Ex Input:
I found these more than 10 years ago in a health food store. After I bought one bag I found myself stopping by that store once a week to get these chips. The New York Cheddar flavor is so good, you will have a hard time not eating a whole bag.

Ex Output:
Positive

Ex Input:
My 8 month old yellow lab destroyed the rope almost immediately. She also watched me fill it with toys and chewed on the screw off part until she broke the cover. Then she chewed up the bottle. Not for the heavy chewers like Labs.

Ex Output:
Negative