Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Doesn't belong as part of the series

The Prophet of Yonwood should not be considered part of the Ember series. It has some valid story lines that include the impact of blindly following orders, and it's relevant in this post 9/11 world. With that being said, this book has nothing to do with the Ember story line, except for the last chapter, which felt like it was a hasty addition and irrelevant to the remainder of the book. I can't imagine any child being enthralled with this book, or appreciating the deeper, more somber undertones that Duprau practically beats the reader over the head with. Overall, it was a disappointment and a completely unnecessary piece of theEmber saga.