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.

Easy to lay down.Received this on friday night,spent saturday training our dog,on sunday morning he went downstairs by himself for the first time.Prior to this our stairs were too slippery for our pup to feel confident in descending them. Product is almost invisible on our stairs but provides a secure footing for canines and humans. Would highly recommend!
Output:
positive