Given the task definition and input, reply with output. 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.

The 6 hour power energy shot does just what it says. A lot of times I only drink half the bottle to achieve the mental alertness that I look for. It's one of the best energy shots out there when you figure in price, taste and effectiveness.
Positive