PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, syngas created from biomass contains contaminants such as tar and sulphur that interfere with the conversion of the syngas into products.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ecomena.org