<http://webisa.webdatacommons.org/412211674>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/53298287>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/412211674> .
<http://webisa.webdatacommons.org/412211674>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/412211674>	<http://www.w3.org/ns/prov#value>	"The concepts of stereo sound and three-dimensional or ???surround sound??? are well known and have been implemented in entertainment and other systems which are available to the public." .