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

[Q]: I just plugged it in and it's on the job. Perhaps it would be more assuring if it had a digital read-out of level of monooxide in the air.
[A]: Positive


[Q]: Great book for people that need to write email. It would be nice to review the grammar rule's from time to time.
[A]: Positive


[Q]: I really liked this book. It is a page turner for sure. I would read before I went to bed and have to force myself to find a stopping point.I think that Patricia Cornwell is at her prime in this novel.
[A]:
Positive