PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • As a material, graphene is the thinnest and strongest in the world -- more than 100 times stronger than diamond -- and is capable of acting as an ultimate conductor at room temperature.
http://www.w3.org/ns/prov#wasQuotedFrom
  • sciencedaily.com