PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The early Universe lacked the heavy elements that seem necessary for life, which need to be produced by long lived stars, so overtime these elements become more numerous and the types of stars that come to predominate are ones that, unlike earlier stars, readily produce a rich sea of these elements.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ieet.org