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 ordered this, got a cool color pink vinyl, played the b-side and it skipped several times. Well, bummer. I called amazon, got a replacement sent, same color vinyl arrived with the same skipping in the same places. Had another replacement sent. Same color, same... you get the point.

Ex Output:
negative

Ex Input:
I have been searching for a xbox one controller charger for a while. This charging station is perfect for my boys! Super excited that I do not have to constantly go buy batteries.

Ex Output:
positive

Ex Input:
Purchased this for my husband who need a mouth guard at night, he said this is just as good as the one he had made at the dentist which was expensive to have made. I will buy this again for him.

Ex Output:
positive