About: http://webisa.webdatacommons.org/45073364

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	Some elements, such as uranium and thorium, are naturally radioactive and emit gamma-rays as part of their radioactivity.
http://www.w3.org/ns/prov#wasQuotedFrom	usra.edu