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

[Q]: El primer libro del Dr. Weiss sigue siendo un gran libro para todos aquellos a quienes les inquieta el tema de la reencarnación, así no crean en ella.
[A]: Positive


[Q]: I am a complete Sudoku addict and am very disappointed with this book. The only reason I bought it was because I was desperate for more puzzles and it was the only one available at the store I was in. First of all, it costs $4.99 which to me, is way too much money when you can get a Kappa book for $1.99 which has better puzzles. Another thing that bugs me about this book is that some of the answer keys in the back don't match the corresponding puzzles. When I get to the difficult/Very Challenging ones in the back, sometimes I need a little help! But unfortunately, this book has quite a few errors in the answer section so when I've hit a dead end, it's over.I would recommend Kappa books from your local supermarket. This simply costs too much money for not mush quality.
[A]: Negative


[Q]: The Ramones meet AC/DC. A live record with the song covered by Pearl Jam. Not a great recording. The songs are good, would rather hear studio versions. If you are looking to buy cause of the Pearl Jam song.. don't waste your money. Otherwise they are a good band but the production is no good!
[A]:
Negative