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'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!
positive

This small vacuum cleaner is really powerful enough to clean the dirt / food particles in car. Cleans well even in the small gaps between seats. The long pipe accessory makes it easy to clean below seats. This works well even without the car engine off in my crossover. And the long cable helps clean inside as well as outside the car. The filter is easy to remove and clean. A must have item.
positive

I have had lumbar surgery three times in the past nineteen years. I bought this to elevate my legs at night when I sleep. It really takes the pressure off your sciatic nerve, and if you are someone that suffers from edema it also helps to reduce the swelling in your feet ankles and calves
positive