<http://webisa.webdatacommons.org/394454251>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/394454251>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/22250667>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/394454251> .
<http://webisa.webdatacommons.org/394454251>	<http://www.w3.org/ns/prov#value>	"In addition to sending control signals from loads to sources, the optical networks according to the invention may be bi-directional in that control signals and other communications may be sent from the loads to the sources." .