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

I used this program for my science class. My students loved it! They learned some interesting facts, saw damage from earthquakes we talked about in class and never once did I hear that it was boring! Can't beat that!
Positive

I don't know if you can actually call this music. It is truly terrible. However, I love listening to it for some strange music. ... I am not normally a fan of rap music, but I laugh out loud every time I hear some of these songs. These Cash Money guys should be comedians. Except for Juvenile, since I can't understand anything he says, which is also rather funny. Don't buy it for the music, but it for the comedy.
Positive

We plugged this on only to have it spark and not power our ibook G4. It went back the next day.
Negative