<http://webisa.webdatacommons.org/69756940>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<iptv.org> .
<http://webisa.webdatacommons.org/prov/215642648>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/69756940> .
<http://webisa.webdatacommons.org/69756940>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/69756940>	<http://www.w3.org/ns/prov#value>	"Bill illustrates how various types of transportation utilize friction, from the use of traction in trains and the 'roll' of ball bearings in skateboards and automobiles, to the lack of friction in a hovercraft." .