Instructions: 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.
Input: Awesome diffuser when it works. We purchased the item and used it once. The second time we tried to use it we discovered it wouldn't turn on. Obviously verified the plug worked and the issue was with the product. Of course we're 3 days outside of the return window.
Output:
negative