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: These layered necklaces are really in fashion now so I've been wanting to purchase. Finally got it and happy I did. Very cute for every day or even a night out
Example Output: positive

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: I was very disappointed because I paid extra shipping to have this for my grandmother's birthday and it said it was delivered but I did not receive the package. I want a refund.
Example Output:
negative