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.

Q: I've had this display port cable since January 2019, about six months into using it my screen kept turning black out of nowhere. So I had to keep plugging it into another display port on my GPU to get the screen to register. I continued to use it like this for another several months until it kept happening more frequently, now I just switched back to HDMI and have not had any issues for a week. This chord looks pretty but is defective.

A: negative
****
Q: I use my mobile phone constantly throughout the day for work and need headphones to so I can have both hands free. These headphones are amazing, comfortable, and a great buy.

A: positive
****
Q: It is convenient and practical, simple to install, no complicated parts, only need to install 6 screws to work, no noise during operation, stable rotation.

A:
positive
****