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: 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..
Example Output: negative

Example Input: This plaque is a very thin piece of cheap wood. The lettering is sometimes hard to read. Very disappointing and too embarrassing to give as the gift I had planned.
Example Output: negative

Example Input: Great quality umbrella. Really easy to open with just one click of the button. Easy to use on a rainy day. Definitely recommend this for my family and friends.
Example Output:
positive