Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It does work!

This book could have been condensed into a third of its size- it can be a little boring before you get to the goods. Most of the same information can be found for free on the internet esp. the primary topic concerning 'timing'. The book offers many additional methods to incorporate for best odds. 4 stars- I got my girl after two boys, reasonably priced, could have been written more succinctly. Good luck to you!