Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Enjoyed reading through this book

Most of this book dealt with explaining how the geological build of the Grand Canyon can be explained to have happened in a short period of time, thus providing a basis for a young earth. I thought they did a good job explaining the concepts and also covering the inaccuracy issues with different radioactive decay dating techniques. I took off a star because the latter part of the book that talked about flora, fauna and animal life. I felt that it did not really have any direction, unlike the rest of the book. Overall, the book was well done, provided some interesting information, and was presented in an easy to understand format.