About: http://webisa.webdatacommons.org/361615751

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The two main sources of background radiation include radioactive materials, such as uranium in the natural environment and cosmic radiation from outer space.
http://www.w3.org/ns/prov#wasQuotedFrom	arpansa.gov.au