<http://webisa.webdatacommons.org/prov/390593461>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/389915129> .
<http://webisa.webdatacommons.org/389915129>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<sonicfrog.net> .
<http://webisa.webdatacommons.org/389915129>	<http://www.w3.org/ns/prov#value>	"Background radiation levels depend on factors including altitude and the amount of naturally occurring radioactive elements in the soil." .
<http://webisa.webdatacommons.org/prov/480321938>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/389915129> .
<http://webisa.webdatacommons.org/389915129>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .