PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Graphene, a single-atom-thick sheet of graphite, is a new material which combines aspects of semiconductors and metals.
http://www.w3.org/ns/prov#wasQuotedFrom
  • phys.org