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, much like carbon nanotubes and other fullerenes, with one major difference.
http://www.w3.org/ns/prov#wasQuotedFrom
  • pearltrees.com