PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Dangerous elements such as radium and radon are continually produced in the Earth???s crust as intermediary steps in decay chains.Nuclear energyIt is almost impossible to have lived at any time since the mid-20th century and not be aware that energy can be derived from the atomic nucleus.
http://www.w3.org/ns/prov#wasQuotedFrom
  • britannica.com