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

Example input: I've read this book with much expectation, it was very boring all through out the book
Example output: Negative
Example explanation: Review writer does not like the book because it was boring, therefore it is a negative review.
Q: Being a camera aficionado and collector, I picked this up at Walmart to play around with. Even THAT'S not possible... see, there's no support for Mac OS X. Vivitar's website claims no driver is needed for OS X, that an icon appears on the desktop in Classic Mode. That's a cynical, damnable LIE! Until some similarly-wronged Code Warrior writes a driver for this, I can't affirm to you that the dynamic range of this sweetheart sucks eggs, but that's what I've been told.It really deserves negative stars. I used to love Vivitar SLR stuff. Now they don't even answer email inquiries and complaints. Vivitar should be cast into the deepest pit of Hell for all eternity.
A:
Negative