About: http://webisa.webdatacommons.org/451426847

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	In the event that its vapor pressure is insufficient, additional pressure may be provided in the container by a suitable pressurizing gas, such as nitrogen, nitrous oxide or carbon dioxide.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com