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.

[EX Q]: The Roomba 980 performs as stated. Excellent pick up and battery life. The WiFi connectivity is handy for as needed cleaning between scheduled times. We are very pleased with the unit.
[EX A]: positive

[EX Q]: I was skeptical that this would work to keep my hound dog quiet - but it works like a charm! Maybe because her nose is more sensitive?? We don't always put her bark collar on, but when we let her out at night when her barking would be more disturbing to neighbors, it works as described. Sometimes we only put the collar on and not activate it - that also works now that she associated the spray with the collar.
[EX A]: positive

[EX Q]: These fit the bill perfectly. While I have full over the ear headphones when I am at home, those are too bulky to carry on trips, especially anything involving plane flight, where size counts for carry on bags. I favor these over separate ear plugs that hang loose, and never fit my ear. And if that isn't enough, audio quality is nearly equal to a friend's loose fitting plugs that he paid almost $100 for. These have clear sound, minus just a touch of bass which is not surprising, while still giving a full body of sound. My cellphone has a built in equalizer, and some day I may attempt to improve the default sound by making a personalized setup for these headphones. But it should be noted that I do not feel any great urgency to do so, either. Hope this all helps!
[EX A]:
positive