Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
One example is below.
Q: I've read this book with much expectation, it was very boring all through out the book
A: Negative
Rationale: Review writer does not like the book because it was boring, therefore it is a negative review.
Q: If you like Math Rock/Instrumental Indie Rock i.e: Paul Newman, Tortoise, Don Cabellero, Dianogah, Triseza, Godspeed you Black Emperor than this is highly recommended. No Vocals just pure melodic builds and peaks. Really good deep Bass lines and fantastic drumming.
A:
Positive