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: Been a long time since a book has held me so captivated & enthralled. Deep, exciting, moving & Inspiring, Mitchell's command of the English language is unparalleled. Never wanted this book to end.
Example Output: positive

Example Input: Useless, basically its like a kazoo for your nose, does not alleviate snoring at all, if anything it made by nose feel sore the morning after, and is easily clogged if you have sinus issues.
Example Output: negative

Example Input: I was sceptical that it would relieve pain I had in my knee when exercising. However it worked perfectly and I now use it whenever cycling or walking distance. The velcro is extensive and it is well made. Looks like it should last some time.
Example Output:
positive