PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Organic chemicals are a broad class of substances containing carbon and its derivatives, including hydrogen, oxygen, nitrogen, sulphur, phosphorus and other elements.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ons.gov.uk