About: http://webisa.webdatacommons.org/138936878

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	A sound generation source, such as a musical instrument, microphone, multi-media player, or other electronic device generates an electrical audio signal.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com