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 purchased this item to use for my sons prom send off, the only balloons that were able to be used were the latex ones, no foil balloons could be used, also the discription shows a 2018, I was sent a 2019, which means the day of prom last minute I had to go and purchase the correct numbers which cost me an extra 40 dollars... I'm so disappointed..

Ex Output:
negative

Ex Input:
Peice of crap dont work cant pick up nothing here so when I called company to send it back the company refused to reimburse me so thank God I had Amazon insurance

Ex Output:
negative

Ex Input:
! I was hoping that this product would do as good a job on my expensive cast iron enamel kitchen sink. It did not do the clean nor polish. Very disappointed with this product.That's what I get for trying to save money. Back to buying Delta Cast Iron Sink cleaner at $15 a bottle and using it sparingly.

Ex Output:
negative