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: Well I would love to give you an actual review of this product but I have not received it. I have tried to contact wheel toppers without any success. I have also informed amazon of this and so far I have not gotten any help from them. I am for the first time disappointed in them as well
Example Output: negative

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: Great unit. Much better than standard timers due to the dimming of the light. I have noticed the fish don't scatter as if scared when the light turns on or off any more. For the price its well worth the purchase. Oh also note that it does work with other light fixtures such as beamswork.
Example Output:
positive