Given an Amazon review, indicate whether it is a 'Positive Review' or 'Negative Review'.

[EX Q]: For three weeks it worked great. Now it will not type lowercase letters consistently.
[EX A]: Negative Review

[EX Q]: Worked fine for a year, although the signal was never as strong as my Macbook Air. But then it suddenly broke slightly after a year, just stopped functioning entirely. I tried reinstalling the driver, but that didn't work. I think it's worth it to invest in a better adapter.
[EX A]: Negative Review

[EX Q]: I am very happy with the cover and case I got for my Kindle! It dresses up my Kindle so nicely! Fast delivery and a GREAT price!
[EX A]:
Positive Review