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: Arrived promptly. I received it today and began taking immediately. It contains so many vitamins, such as A, C, D3, E, B6, Folic acid and of course biotin, etc. I believe in this product and hope it will deliver promising results.
Example Output: positive

Example Input: Didnt work at all. As soon as I began filling a tube it would shut off (overheating). Wasnt happy as I hade 7 tubes to blow up. Luckily I had a manual one.
Example Output: negative

Example Input: Horrible! Plastic container arrived broken and cracked! One box contained pouches that had leaks and there was hot Choclate powder everywhere! I literally had to trash this and find another gift option
Example Output:
negative