About: http://webisa.webdatacommons.org/256885021

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	In FIG. 19(b) there are controllers, such as pump control unit 106 and valve control unit 107, and detectors, such as flow rate detector 109 and water level detector 108.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk