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

Ex Input:
Even thou I enjoyed the art, the book wasn't in english. I wanted to read and understand about the art, to bad.

Ex Output:
Negative

Ex Input:
Well another one of my first dvd purchases...I found this concert very poor...it did nothing for me... the sound quality was poor, The set on stage was quite good but lacked the final sparkle, Janet's performance was glitzy... but sadly something was missing...my advice is puchase Janet's later DVDS...

Ex Output:
Negative

Ex Input:
This forum is for your opinion of the book, not for each of you to explain the plot over and over again. That's already done above.

Ex Output:
Positive