<http://webisa.webdatacommons.org/prov/137300572>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/152888185> .
<http://webisa.webdatacommons.org/152888185>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/152888185>	<http://www.w3.org/ns/prov#value>	"In addition, the present invention is a method of bi-directional optical amplification of signal rays within an optical communications system." .
<http://webisa.webdatacommons.org/152888185>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/485746399>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/152888185> .