Definition: 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.
Input: The fence does not issue a warning beep when the dog approaches the perimeter -- it beeps and shocks at the same time despite correct installation and varying the transmitter settings. I tested on myself after training the dogs without the collars activated and - despite the disfunction - I am unable to reach customer service for assistance or return/warranty redemption. DO NOT ORDER
Output:
negative