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: Although this pump is smaller it works great for the value. I used it on the farm to spray fence rolls and it can reach over 10 feet of stream. We are very please
Example Output: positive

Example Input: I ordered the wrong size by mistake, I was able to exchange for the correct size in 48 hours without a hassle, The product? It's an Adidas, I expected quality, well... I've got it, it's a very confortable shoe.
Example Output: positive

Example Input: I bought this pack mainly for the opal centered piece but all of them are way cute and good quality for the price. I've been wearing the one ring for a month and it still looks new, it probably helps that I take it out when I shower/bathe.
Example Output:
positive