About: http://webisa.webdatacommons.org/263391259

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	A convenient second pressure source 170 is selected from the group consisting of compressed gases such as air, nitrogen, oxygen, helium, NOx and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com