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

Ex Input:
As a musician and musicology student, I am very familar with both the "classical" world of music, and the popular world of music, and I have to say that perhaps string quartet versions of R.E.M. might be interesting, but you need a creative and enterprising quartet (such as Kronos Quartet, etc.) to do this. This CD is greatly disappointing because the transcriptions are simplistic and lacking imagination. String quartet recordings can be very exciting, but not here!

Ex Output:
Negative


Ex Input:
Ordered two and tested them out: one had a bad pump but the return was easy.These airbeds are super cheap and great. Everyone who has slept on them says they are extremely comfortable. They hold the air well. I recommend them very highly

Ex Output:
Positive


Ex Input:
I bought three copies of this book as funny Christmas presents, and they were a big hit. One of the people I gave it to, just after opening it, began to read several small sections aloud to the rest of us, and it was very entertaining.

Ex Output:

Positive