URL	Title	Id
http://digfir-published.macmillanusa.com/gls_animated_graph/gls_4_15.html	Chapter 1. eFigure 4.15	511e5360b11c0f033e000000
http://digfir-published.macmillanusa.com/gls_animated_graph/gls_4_15_dlap.xml	DLAP questions	511e5360b11c0f033e000000