Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Let down

I was excited about reading this book. The first bio I turned to was that of my favorite, Buster Keaton. After reading a bit of the bio, I put the book down and returned it back to the library where I got it. The information listed in there was wrong. They had a couple of facts that were not true, so that left me feeling very disappointed. If that one bio was filled with misinformation, how many others are?