Instruct: Classify a given review into positive or negative sentiment.
Query: An Ok But about A GREAT American

John McCain is a great man. A true American Hero. His story is one of courage and faith. I think he will make a great President. However, this book is dull. Some of the parts where he describes life in a Vietnamese POW camp are interesting and must reading. However, as a whole the book is just not as exciting as it should be. McCain is a great man, so hopefully next time around his story will be told in a better way.