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.

NOT THE PRODUCT THEY ARE ADVERTISING. I ONLY USE THIS BRAND BECAUSE THE COMFORT AND THEY SEND ME KNOCK OFFS NOT EVEN WITH THE SAME SHAPE MOUTH GUARDS. NOT COMFORTABLE LIKE THE ACTUAL BRAND. DONT BUY. BEWARE.
Output:
negative