About: http://webisa.webdatacommons.org/19672646

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	Some systems are active, using moving parts such as pumps and valves, and while others are passive, using no mechanical or moving parts.
http://www.w3.org/ns/prov#wasQuotedFrom	issuu.com