About: http://webisa.webdatacommons.org/196375835

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 the preferred embodiment, the filter is a high pass filter of the type which passes signals having a frequency greater or equal to the pacer signal (for example, 1 KHz).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com