Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Greatest book.

This was one of R. L. Stine's greatest books ever except for his Fear Street series which is better than Goosebumps. Evan wants to get even with Conan for beating him up. Then Andy brings in a can of Monster Blood which turns out to be blue......It causes a lot of trouble. But at the end the litttle blue blobs destroy each other. But afterward Conan says that he ate the Monster Blood. And then there are soon 4 Conans....I wish there was a Monster Blood V to see if Conan destoyed himself along with the other Conans.