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: I agree , this people are big time scammers look what they advertise and then you can see our chat how he says only works for T mobile when they advertised worked for AT&T , now want me to return the equipment to refund my money. Sure you already fooled me once and now you want the equipment and keep my money too? You been warn be careful buying from them, plenty of other sellers with integrity and wont steal your money
Example Output: negative

Example Input: This item was much shorter than I expected it to be. I have an alaskan malamute and this did not do the trick in trying to help with his pulling. If you have a small dog, this will work for you.
Example Output: negative

Example Input: Informative book that could be your best guide specially if you want to learn more about cryptocurrency. I was so impressed on how this book was written because you will learn a lot from this specially if you are a newbie. Perfect read.
Example Output:
positive