About: http://webisa.webdatacommons.org/60404739

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	This demand can hardly be fulfilled in practice due to interference phenomena, uneven oscillation of the sound generating elements, and temperature, flow and other effects.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au