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:
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.

Ex Output:
positive

Ex Input:
Since I received this lamp two weeks ago, I used it twice before it completely ceased working. I replaced with a new bulb but it still does not work. This lamp is made with poor quality parts and is not worth the money I paid for. I do not recommend this product. This product does not even deserve one star.

Ex Output:
negative