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: Only looks good in the picture, and the materials are very rough, stained and cheap. The copper is a lining not pure. I should’ve know due to low price but even at the price it is definitely very poor workmanship and not worthwhile. Now I have spend more money getting something better so as they say; better to spend wisely then hunt for bargains.
Example Output: negative

Example Input: Folding t-shirts is the biggest plus. They look so neat when done with the flip-fold. Our 18-year-old grandsons saw ours, & were so impressed, we had to order one for them!
Example Output: positive

Example Input: It is very durable and stands up to a lot of abuse. I was worried I wouldn't know how to install but the instructions provided are great!These fit great and are really easy to attach to my phone.
Example Output:
positive