Instructions: 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: I am still reading the book, but I have to say that I believe it to be a masterpiece. I find it to be truly enlightening, and addictive to read. I love it because it has made many unclear concepts from quantum mechanics clear and the physical applications of group theory are always present, keeping the book entertaining.
Output:
positive