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.

Ex Input:
I slouch at work sitting at a desk all day. Was trying to find a good solution to help alleviate the slouching and back pain. This posture corrector has definitely helped! I am sitting straighter and the pain has lessened.This posture corrector has given me strong support for my back, without restricting my movements.

Ex Output:
positive

Ex 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.

Ex Output:
negative

Ex Input:
Easy to carry, either put in the car or inside the house without blocking the walk way. This is backup tool for emergency. Very sturdiness, you can still feel it strong to dig the snow even this design for foldable. Can be use for adult or children

Ex Output:
positive