About: http://webisa.webdatacommons.org/311547126

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	It is also desirable to know the position of the movable members, such as the sliding sleeve in a sliding sleeve valve, in order to better control the flow from various zones.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com