PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Rutherford and Royds in 1907 demonstrated that alpha particles are helium nuclei.SourcesExcept for hydrogen, helium is the most abundant element found through out the universe.
http://www.w3.org/ns/prov#wasQuotedFrom
  • helixso.com