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.

I have been trying quite a few of these keto supplements, and this one has been my favorite so far. I love the sustained energy I get from these. If you're starting the keto diet give these a shot!
Output:
positive