URL	Title	Id
http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_16_2_015.html	Chapter 1. calc_tutorial_16_2_015	50cb4a5eb11c0f717a000000
http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_16_2_015_dlap.xml	DLAP questions	50cb4a5eb11c0f717a000000