<http://webisa.webdatacommons.org/prov/15499479>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/447260639> .
<http://webisa.webdatacommons.org/447260639>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<scienceblogs.com> .
<http://webisa.webdatacommons.org/447260639>	<http://www.w3.org/ns/prov#value>	"It is an open classroom of physics, astronomy and other topics that Ethan chooses." .
<http://webisa.webdatacommons.org/447260639>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .