About: http://webisa.webdatacommons.org/67222421

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	The oxidizing gas may be selected from oxygen-containing gases such as O2, N2 O, H2 O, with or without an addition of ozone gas, O3, generated by an ozonizer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr