About: http://webisa.webdatacommons.org/400785596

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	However, the cleaning gas may be composed of fractions of oxygen, nitrogen, argon, helium, neon, xenon, krypton, carbon dioxide, hydrogen, nitrous oxide, steam and other gases, including air.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es