URL	Title	Id
http://digfir-published.macmillanusa.com/cogtk/inversion effect.html	Chapter 1. Inversion Effect	50e76a1fb11c0fa677000000
http://digfir-published.macmillanusa.com/cogtk/inversion effect_dlap.xml	DLAP questions	50e76a1fb11c0fa677000000