PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Graphene is a form of carbon, and can be considered to be a single layer of graphite.
http://www.w3.org/ns/prov#wasQuotedFrom
  • sciblogs.co.nz