PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • BACKGROUND OF THE INVENTION Various types of combined land, water and air craft have been designed and developed but little or no commercial success has been achieved with any of these vehicles.
http://www.w3.org/ns/prov#wasQuotedFrom
  • freepatentsonline.com