Instruct: Classify Amazon reviews into positive or negative sentiment
Query: the birth of venus

i'm glad i borrowed this book from the library instead of buying it. the characters are so not believeable. for a fourteen year old she seems too knowledgeable about history and politics, and what is with her very hostile relationship with her brothers? Sure there is a lot of sibling rivalry, but don't these characters ever grow up and develop some kind of maturity and insight? The prologue was remarkably interesting, and I was hooked, but it was a downward plunge till the end. the painter seems to have made a 180-degree character change when he reappears in the end after a long absence. the plot, characters and coherence of incidents are very loosely interwoven, and very inconsistently developed. a very unbalanced, tedious book.