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

The canisters are easy to use, and when you finish them, you can send them back for a refund of the deposit. I contacted customer service to get a shipping label, and they were very helpful and friendly. It doesn't hurt that the company is based in Ann Arbor - Go Blue!
positive