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

[Q]: We play a card game that requires holding several cards. These card holders are a huge help. I really like having multiple colors.
[A]: Positive

[Q]: Worked like a charm all over England. I haven't tried the other adaptors, but I found my MacBook to work just like it does here in the US, and there was no difficulty plugging into the outlets.
[A]: Positive

[Q]: This is a great CD, especially if you like Bluegrass music and Dolly Parton. What a fantastic combination!
[A]:
Positive