URL	Title	Id
http://digfir-published.macmillanusa.com/astro_interactive_exercise/ie_celestial_coordinates.html	Chapter . Celestial Coordinates	5131eba5b11c0fe279000000
http://digfir-published.macmillanusa.com/astro_interactive_exercise/ie_celestial_coordinates_dlap.xml	DLAP questions	5131eba5b11c0fe279000000