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

[Q]: This video is fine for ballroom dancers, but it has nothing to do with the authentic Argentine Tango. Even ballroom dancing has now a separate category for Argentine Tango. Unfortunately, this video is not that. That's why, I rate it at 1.
[A]: Negative


[Q]: A really fun book, well worth your time if you like Pratchett. None of our old pals [Rincewind, Gaspode, Vimes, Susan] put in an appearence [other than the guy WHO TALKS LIKE THIS and an old monk with a broom, and they but briefly], but it does add some info to the overall Discworld mythology, and provides some laughs as well.
[A]: Positive


[Q]: I play Hand and Foot every other week and the four of us love using these. You get 13 cards and it is very handy to have.
[A]:
Positive