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: If you’re thinking of starting, have started or even have been eating Keto, this book is a must have! This is exactly what I was looking for when I started!
Example Output: positive

Example Input: I ordered this product but received the joint supplement instead. Amazon provided me a refund, but I still want to try the holy basil. If I order again, can I be assured I will receive the correct product?
Example Output: negative

Example Input: I dislike bulky cases, so I wanted a very slim and simple case for my phone. This slim case is perfect for me, it barely adds any thickness but I no longer worry about scratching the phone. And matte finish helps with holding so that its not as slippery. I am quite pleased with the case.
Example Output:
positive