About: http://webisa.webdatacommons.org/129521338

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	Please note that 1000 corresponds to pi and 500 to pi/2 i.e. x-axis are frequencies.
http://www.w3.org/ns/prov#wasQuotedFrom	zhaw.ch