<http://webisa.webdatacommons.org/381727013>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/276429397>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/381727013> .
<http://webisa.webdatacommons.org/381727013>	<http://www.w3.org/ns/prov#value>	"Diamonds, dense forms of carbon, are the hardest natural substance known." .
<http://webisa.webdatacommons.org/381727013>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<phys.org> .