<http://webisa.webdatacommons.org/203278304>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/203278304>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/203278304>	<http://www.w3.org/ns/prov#value>	"As a scheme of securing an idle channel till data transmission by using a certain signal during a channel search period, not only a scheme of periodically transmitting the signal on the idle channel as described above, but also a scheme of continuously outputting a signal such as a tone signal may be available." .
<http://webisa.webdatacommons.org/prov/390041477>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/203278304> .