Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
One example: I've read this book with much expectation, it was very boring all through out the book
Solution is here: Negative
Explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Now, solve this: I found the basic idea of the book to be excellent and very true to life, however, I cannot say the same for the characters, Felicia in particular. Beyond her frustration, we are never privy to any of her emotions. What did she think of her plight? Why did she never worry that Johnny, her lover, might reject her? I feel that the author made a mistake by never writing in Felicia's viewpoint during her scenes with Mr. Hilditch. We certainly know many of his feeling and thoughts concerning Felicia, but never, never any of her thoughts about her sinister friend. ...The character of Mr. Hilditch is very well developed, unfortunately more so than the main character. I felt that too much of the book (one quarter) was devoted to Mr. Hilditch's downward spiral. It almost becomes a completely different story.As a previous reviewer mentioned, the author's practice on going back and the forth between past and present was confusing.
Solution:
Negative