You will be given a definition of a task first, then some input of the task.
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.

Original review:Love this and wear it all the time. It does get little balls under the arm. REAL WOOL AND SUPER WARM! Update: NOT SURE IT"S REAL WOOL!!! It didn't shrink in the washer or dryer. Accidentally washed!
Output:
positive