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

[EX Q]: I'm no great fan of bluegrass or country, but this release intrigued me because - like many people, I suspect - I have a soft spot for Dolly. "The Grass is Blue", though, really is as good as the other reviewers have said.
[EX A]: Positive

[EX Q]: Like all of her Scarpetta mystery novels, Patricia Cornwell has proven again that she must have been one dynamite of a Coroner when she was practicing. She has a wealth of information in her books and it is so interesting to follow as she progresses to solving the mystery. I've never enjoyed reading as much as when I pick up a Cornwell novel.
[EX A]: Positive

[EX Q]: This was the first Anne Perry book I have read, but it will be the last. I found the basic premise of the main character's amnesia to be a gimmick. It irritated me that he would never "come clean" about his lack of memory, especially when we find out that the people he worked with could see through it. I have enjoyed other murder-mysteries where the villain was a lot less obvious to the reader. It seems from her sales figures that I am in the minority - what am I missing?
[EX A]:
Negative