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.

Example input: These are junk! Both bulbs have burned out within a two month period!! I cannot believe that this company can be in business with such poor quality. I have used infrared lights for my ball python for many years now and I get a varied range of months from a bulb, but I have never gone through two bulbs in a matter of two months! I am very disappointed.
Example output: negative
Example explanation: The user seems very disappointed in the product. Because the bulb they ordered has been burned out earlier than usual. So, it's a negative review.
Q: Right out of the box it was fully charged and ready to go. I decided to test it out by powering my Raspberry Pi while I did updates and some other tinkering. I can't remember exactly when I started but the Pi was powered for well over 12 hours before the battery bank lost juice. Charging the bank via solar is slow but can be done if the need arose. Even charging via an outlet took a bit of time but once it's charged you're good to go. I wouldn't hesitate using this to power my Raspberry Pi for portable ham radio digital mode operation. I may buy a second one to power a small screen and as a backup. Directions took a little bit to get through but fairly straightforward after that. I don't plan on testing how water resistant it is and it doesn't feel like something I'd want to drop as the outer shell is only plastic.
A:
positive