PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A high-pressure purge gas stream 156 is taken from ammonia purification 128 to remove inert gases such as argon, carbon dioxide, and methane that accumulate in the primary synthesis loop.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com