PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Further, most inorganic solids are covered with a hydrophilic native surface oxide that is characterized by the presence of surface hydroxyl groups (M-OH, where M represents an atom of the inorganic material, such as silicon or aluminum).
http://www.w3.org/ns/prov#wasQuotedFrom
  • freepatentsonline.com