Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Should not be part of the series!

This book is not bad if it was written to be on it's own, however, I think it was a bad choice to pretend this was somehow related to the City of Ember series. It seemed more like the author had an idea for a completely different story but decided to link it to the Ember series just so people would bother reading it. The connection to the series is so weak it's laughable. I was very disappointed.