PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Under U.S. safety regulations, new gas pipelines must be tested with heavily pressurized water or other liquids, air, natural gas or inert gas.
http://www.w3.org/ns/prov#wasQuotedFrom
  • arcticgas.gov