URL	Title	Id
http://digfir-published.macmillanusa.com/astro_interactive_exercise/ie_pathways_of_stellar_evolution.html	Chapter 1. Pathways of Stellar Evolution	514137fcb11c0ffe1a000003
http://digfir-published.macmillanusa.com/astro_interactive_exercise/ie_pathways_of_stellar_evolution_dlap.xml	DLAP questions	514137fcb11c0ffe1a000003