PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Some Industrial wastes such as fly-ash, slag, silica fume, and rice hull ash, are the most popular cement-replacements today.
http://www.w3.org/ns/prov#wasQuotedFrom
  • worldchanging.com