Definition: 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.
Input: My foster dog, Rex, came to me severely underweight with nutrient defficiencies and digestive issues. After a few weeks of prescription food, I phased him into Newman's Own Advanced Formula. Not only does he love it, but he's gaining weight marvelously and digests it easily. It was recommended by many, and has minimal to no fillers. Personally, I enjoy the product because as a life-long vegetarian, it was important to find a food with strict animal compassion practices, and Newman's Own apparently has those. It's affordable as well. Sticking with it!
Output:
Positive