Instruct: Classify a given review into positive or negative sentiment.
Query: Disappointing - Not really a book about biztalk.

Being new to XML, I learned quite a bit about xml and xsl from this book. Biztalk is basically an xml/xsl processing rule engine, so this background information was useful and appropriate. Once I finished the XML background chapters, the book rapidly spiralled downward. Most of the examples are actually web programming examples using this unpopular scripting language called 'Omnimark'. The section on Biztalk had very very little information in it. 'Professional Biztalk', though a little deep, is a much better book. This book should have been titled 'XML and Omnimark Programming with almost NO Biztalk'.