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: A beautiful set of international power converters for travel. It is equipped with international adapters for different countries. I am very satisfied with this product and will buy gifts for travel friends again.
Example Output: positive

Example Input: Comfortable to carry. I gave it a 4 for durability only because it's impossible to judge after only a few days, not because of any issues. It is well made and looks as if it will last.
Example Output:
positive