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: Excellent and suspenseful information. All over the place as far as the material. We travel back and forth from West Virgina to London to Ohio... and back again. Would have enjoyed it if the first part of the book was supporting information as to the phenomena itself and how it has indeed appeared elsewhere in history, how the phenomena ties to UFO sightings etc. but Keel's hypothesis that all paranormal activity comes from a parallel universe it difficult to believe, even for paranormal studies. I'm sure that is a first.Although the book was suspenseful and written well, it was just organized poorly. Revise, John. You can do it.
A:
Negative