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: My acid reflux started a year ago. Whenever I lied down, my esophagus would start hurting within minutes. I tried just about all of the various acid reducing pills, both prescription and non-prescription as well as many natural remedies, with limited effect. I still woke up every hour or two at night and had to chew antacids to be able to sleep the next hour.After using this pillow for a few days my acid reflux pain disappeared and I don't need medication anymore. I place the back support pillow along the lower edge of the wedge pillow, inside the pillowcase, to elevate my rib cage. I use the neck support pillow together with a regular pillow, inside a pillowcase, to support my neck. I try to sleep as much as possible on my left side, although after a couple of weeks there was no discomfort sleeping either on my back or on my right side.
A:
Positive