Instruct: Classify Amazon reviews into positive or negative sentiment
Query: If you love the first 3 books DO NOT READ THIS BOOK!

The first 3 books in the Pendragon cycle are among my favorite books (I got the trilogy over 10 years ago and have read them countless times), and the 4th book "Pendragon" was OK...(although not particularly interesting). But "Grail" is absolutely horrible. This book is actually an alternate ending to "Arthur" (book 3). It ignores the last half of that book (and the PERFECT ending) and completely changes everything for the worse. "Grail" is uninteresting and boring, and for it to be called the 5th book in the Pendragon cycle is utterly ridiculous! Avoid this book at all costs!