About: http://webisa.webdatacommons.org/80800387

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	For the purpose of echo cancellation, it is important to distinguish between the four types of events.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com