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 that exists as a sheet, one atom thick with its atoms arranged into a two-dimensional honeycomb structure.
http://www.w3.org/ns/prov#wasQuotedFrom
  • eurekalert.org