<http://webisa.webdatacommons.org/prov/47681417>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/340385876> .
<http://webisa.webdatacommons.org/340385876>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/340385876>	<http://www.w3.org/ns/prov#value>	"Boron carbide is a ceramic material which is obtained by decomposing B2O3 with carbon in the electric furnace:" .
<http://webisa.webdatacommons.org/340385876>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<schools-wikipedia.org> .