PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Inorganic aerogels are generally based on metal alkoxides and include materials such as silica, zirconia, titania, alumina, carbides and many others.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com