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.

Ex Input:
Received an older model than pictured, screen has 2 flaws, crashed after installing microsoft office. I needed the computer for my office, and little to nothing was done to refurbish the unit I was sent. I had to reinstall the operating system myself after half a day I got the thing working to my satisfaction. I would not recommend buying anything from these folks again.

Ex Output:
negative

Ex Input:
Great book...really many tasty recipes are there in this book..which keeps you fit and healthy..I like this helpful guide very much..author explained very well..highly recommended

Ex Output:
positive

Ex Input:
I have had this on my phone for 1 month. I love it. 2 stones have fallen out, one at 2 weeks and 1 at a month. I don't mind, not super noticeable. Update-after 9 months the ring part broke off and numerous stones were missing. Bummer, so pretty at first.

Ex Output:
negative