Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A very disappointing book!

I was looking forward to reading an interesting book on how the German and Russian Sniper hunted each other in Stalingrad. Instead this book has focused on how evil and stupid the Germans are and how intelligent and smart the Russians are during crucial battles in Stalingrad. Overall, this book was very disappointig and I am so glad that I borrowed this book from my local library!