About: http://webisa.webdatacommons.org/409706047

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	The return cable system can be monitored for undesirable energy by applying a filter, such as a bandpass filter, to the output of the upstream system at the headend.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com