PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • One issue may be thickness -- graphene is a form of carbon arranged in a sheet that is one atom thick -- sort of like an unrolled carbon nanotube.
http://www.w3.org/ns/prov#wasQuotedFrom
  • airliners.net