About: http://webisa.webdatacommons.org/409628129

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	While it is readily apparent that either gas, air or other fluid could be used for this purpose, I will refer to the actuating medium as oil for the sake of brevity.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com