PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This is particularly true in the case where the material being siphoned is a sewage sludge which by its nature produces a significant amount of gas.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.es