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.

This is a must have for my yellow lab. We buy one every year or so because we wear it out! The product is well built, it just gets over used. Eventually the giant rubberband wears out. Recommend for any dog who loves to chase balls!
Output:
positive