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: The book starts out well, but the author's explanation of social evolution contradicts the biological evolution Hogan likewise promotes in this book. This story could have been good other than the author's scientific and semi-moralistic inserts. At some points I had the feeling that he was trying to rationalize his own beliefs by authoring them in the book almost separate from the story.
Solution:
Negative