About: http://webisa.webdatacommons.org/4997100

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	A control loop consists of three parts: measurement by a sensor connected to the process; decision in a controller element; and, action through an output device or actuator such as the extractor fan and damper herein.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com