PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Second, oil and fossil fuels are becoming harder to extract and in the long term will be increasingly expensive, so there is a need to expand green chemistry and look for alternative, renewable feedstocks.
http://www.w3.org/ns/prov#wasQuotedFrom
  • icis.com