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: This product was purchased and installed at the end of Mar this year. Its use is normal residential once a week mowing duties - by June 28 2018 this product was in pieces. Minor wear seen up to this point in that threads became visible and had to be removed in order to prevent snagging but today it peeled apart tearing two chunks out of the belt prior to snapping. Check before and after each use.
Example Output: negative

Example Input: First I must say, I have never received anything I ever ordered from Amazon arrive in this condition. The pictures are worth a million words. I’m disappointed.
Example Output: negative

Example Input: This one is much better than my old one, easy to install, easy to switch, feel real, good workmanship, fast signal switching and the most important thing is the remote control, I like this remote control.You don't have to press around every time you switch.Buy right!
Example Output:
positive