You will be given a definition of a task first, then some input of the task.
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.

We have a pug that suffers from chronic ear infections and skin problems. We've consistently kept him on expensive brands that are well known for having good ingredients like California Natural, Chicken Soup for the dog lover's soul, Royal Canin, and a couple others that I can't remember off the top of my head. My Mom picked up this Newman's food because it was available at the grocery store. They love the food, but what really surprises me is that his ears and skin have improved dramatically. His stools are also much firmer and way less stinky than before. This food seems like a real winner for us.
Output:
Positive