<http://webisa.webdatacommons.org/prov/324463257> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/129313048> . <http://webisa.webdatacommons.org/129313048> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/129313048> <http://www.w3.org/ns/prov#value> "A typical cleansing gas includes an inert gas such as nitrogen or argon, together with halogen compounds containing chlorine and/or fluorine." . <http://webisa.webdatacommons.org/129313048> <http://www.w3.org/ns/prov#wasQuotedFrom> <google.com> . <http://webisa.webdatacommons.org/prov/350032491> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/129313048> .