About: http://webisa.webdatacommons.org/30279612

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	Among their other uses are the representation of signal flow in digital filters, state variable filters and some other types of analog filters.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org