Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent, well-researched book!

A well-researched book and a "must read" for students of Ufology, debunkers and skeptics alike.For those of you who have been avoiding this issue it is time to become informed. The author sums it all up in his introduction: "To get beyond..a restrictive mindset, one must be open to all possibilities-to seriously consider alternative theories and explanations". If you had a restrictive mindset when you started this read you won't when you're finished!