Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

[Q]: Although this is a wonderful working power adapter, I don't believe it is the Macally Adapter that was advertised. I am however happy with it and would shop with this vendor again.Thank you.
[A]: Positive


[Q]: There's so much to say about what's dumb about this movie, but it has one thing going for it: pretty colors flickering fast. A great movie when you want to give your brain a rest. Best viewed on mute.
[A]: Negative


[Q]: Bought this DVD on the strength of the tape I had of the same concert broadcast on Showtime in the 90's. Thought the concert should have won a Cable ACE award it was so good. Couldn't wait to see the DVD version and when I heard the first vocals come out I couldn't believe that they had overdubbed new vocals over the originals. What was one of the best concert videos that I had ever seen and heard was ruined by someone who thought he could improve on perfection. Don't waste your money if you've seen the original.
[A]:
Negative