PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Individual nanotubes of some of these unusual forms of carbon are themselves hollow solids, since single-wall nanotubes, multi-wall nanotubes, and nanofiber scrolls usually have hollow interiors that can be filled with various materials.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com