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

these made my dog (13 lb shih tzu) throw up twice, minutes after chewing on one, not even half way. then she had stomach issues throughout the night, on the hour. my other dog had no problems, but then saw that he didn't eat the stick (good boy). i bought them because of the good reviews! ugh... they are going in the trash.
Output:
negative