About: http://webisa.webdatacommons.org/228937135

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	two hierarchical levels, including an upper level comprising a central controller and a lower level comprising a plurality of local agents each associated with one or more communication devices of the system;
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk