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.

Input: Consider Input: When the ache/pain in my upper back won't stop, I always turn to this product. It takes away the pain almost immediately. It is adjustable and comfortable to wear. I love it!!

Output: positive

Input: Consider 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!

Output: positive

Input: Consider Input: It fits my phone perfectly and it is waterproof. I have used it for taking pictures during my kids water activities including some under water pictures, they all came out great. Loving it and not worrying of my phone will get water damaged with this case on.
Output: positive