Instruct: Classify a review into positive or negative sentiment.
Query: Harry Potter and the Half-Blood Prince

I started out reading this book with much enthusiasm. My enthusiasm was waning by page 300 and kept going downhill thereafter. I found the half-blood prince identity and the death to be little more than anti-climactic and certainly bore none of the emotion that such matters would have in previous books. I personally think J.K. Rowling's last book should have been her last of this series, as I feel this book was very lackluster and did not add anything to my "Harry Potter experience". I just hope my grandchildren do not feel the same way.