About: http://webisa.webdatacommons.org/272345467

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 filling units or pumping units, generally including five major components, mainly a head, a piston, a cylinder, an inlet valve, and an outlet valve.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com