Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disapointing

I love Mercedes Lackeys Valdemar and Piers Anthonys Xanth Series, but this book was not up to those standards. It started out all right in an interesting new setting, but even ideas that could have been breath taking suffered from the lack of personal involvement of me the reader of the book. Personally in retrorespect I think that those two authors are incompatible.