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: This item does not heat despite being turned on. In addition, the rack was nearly impossible to put together to be free standing. The provided screws were too big for the holes. Terrible product! To top it off it had absolutely no instruction on how to put together as freestanding.
Example Output: negative

Example Input: The delivery of product took place a few days after i got an email from Amazon that the parcel was delivered. It could be your delivery people marked as delivered.
Example Output: negative

Example Input: Vitamins came melted , caps broken, and smelled. I have ordered these vitamins before but never received them in such a horrendous state. These are not for human consumption.
Example Output:
negative