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 bought one like this for my stepdaughter. She liked it so much as it helped her with her back pain I decided to get one for myself. I am very impressed with this. I am walking tall and not slouching. My back feels good. Thank you for such a great product.
positive