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: What I liked the most about using these Gelatin Vitamins was how quickly my nails started to grow and the strength of them. I always have had thin and brittle nails but now they are finally starting to harden. I also started noticing how much my skin has cleared up on face!
Example Output: positive

Example Input: Lauren Carr really impressed me with The Last Thing She Said. I loved how she wove characters from previous books and series together, and tied them into a cold case mystery. The humor in this book is laugh out loud. There are plenty of cameo appearances by Gnarly, Sterling, Storm, Thor, Traveler to keep the animal lovers happy. The references to Robin Spencer, Mac Faraday, Archie, the Geezer Squad, Chris Matheson and his family all kept me happy. The book is a gem with so many facets. I loved the mystery of Mercedes Livingston and her husband, the romance, the twists, and of course the canine crime boss!
Example Output: positive

Example Input: Perfect for my needs. I have a plastic play pen for my little 3 pound Yorkie this hooks on to wall of play pen.i have one for food and one for water. She does not eat or drink alot so it is perfect. One thing..when she gets mad, she has figured out how to knock it out of holder most of the time she dies not do it.
Example Output:
positive