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.

[Q]: I have used this for my terrible joint pain from being on accutane. It has helped me so much! I have also used it on my husbands back for all the pain that he always has and he found relief from it too! So excited I found this.
[A]: positive

[Q]: I thought the impeller was broken so I purchased a new one and unfortunately learned that it is the filter itself that is no longer able to pump water. I bought this a month ago. My turtles are not happy.
[A]: negative

[Q]: The sheets I received do not have the fancy-looking folding, just a single fold and stitch. They are also very thin and see-through. Also, there is a large tag on the top sheet at the wrong end that I didn't see before washing them. You have to turn it the wrong way to tuck it in. Because of all the positive reviews, this looks like a classic bait-and-switch. Steer clear
[A]:
negative