About: http://webisa.webdatacommons.org/11777320

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	was helpful...A positioner is a device put into a valve to ensure that it is at a correct position of opening as per the control signal.
http://www.w3.org/ns/prov#wasQuotedFrom	control.com