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.

Example Input: I’ve been having knee pain for the past few months so I decided to try this support brace. I can’t believe how much support it does provide and my knee pain has gone down significantly. It’s slim so you can wear it under pants while at work but also looks fine with shorts. So glad I found this and it is helping with my knee pain!
Example Output: positive

Example Input: After the third use it did not charge up any more. Ok if you want a disposable charger to throw away after only a couple of uses. It worked ok for the three times that I was able to use it. However it did not charge my phone to 100%, only to 80% before it lost all of its charging power. I did not have a problem plugging it in to my Pixel 3 with a case on it. But that doesn't matter now as the charger does not work. Seriously, do not purchase this product. Other one star reviews can attest to the same fault.
Example Output: negative

Example Input: Too short!!!! Also, cheap!!! I only wore it once in public. It was Christmas Eve at church. I felt really uncomfortable in it. So, I think I gave it to goodwill.
Example Output:
negative