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: This is a DVD! Why is it presented as a badly shot (often shaky camera work) montage of a lady talking to a birthing class? I really thought there would be actual scenes of a birth (i.e., a birth film as you would see in a real life class), and real graphics (instead of zooming in on the sign the instructor is holding up!), etc. Also, the sound varies from very low to extremely low through the entire thing. I had my tv almost on max volume just to hear.The information is ok, but several years old and new studies are showing controlled breathing beats all the patterned breathing that is taught here. Also, the NY accents get old fast. Again, I really expected more from a $50 DVD. Save your money and buy a book! Also, there's a typo on the back cover, which appears to have been put together on a home PC. The DVD looks like something I would burn. Not high quality stuff.
A:
Negative