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.

My goldendoodle is picky and likes to change up his food once in a while. So I decided to try two other brands....what a mistake. Newman's own is really the best: my dog looks better, feels better, and the quality of food is very good. Do not do like I did and experiment around...my poor dogs stomach....stick with Newmans.
Output:
Positive