Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Well written, but slow.

I liked the book for two reasons, one, it was well written, and two, the main characters were very well established. I did not like the book because some of the characters that played important roles in the plot were not well established, and there were several pages of code that went simply over my head. I would recomend the book to a person with great patience and does not mind gore. I would also recomend to read this book after seeing the movie!