About: http://webisa.webdatacommons.org/74845238

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	Gases such as for example, argon (Ar), helium (He), nitrogen (N2) and hydrogen (H2), among others may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr