<http://webisa.webdatacommons.org/prov/256752580>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/345217628> .
<http://webisa.webdatacommons.org/345217628>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<teachengineering.org> .
<http://webisa.webdatacommons.org/345217628>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/345217628>	<http://www.w3.org/ns/prov#value>	"Stress that conversions end with 'usable and unusable forms of energy." .