<http://webisa.webdatacommons.org/324342983>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/164735692>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/324342983> .
<http://webisa.webdatacommons.org/prov/156183213>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/324342983> .
<http://webisa.webdatacommons.org/324342983>	<http://www.w3.org/ns/prov#value>	"In optical communication systems, messages are transmitted by carrier waves of optical frequencies that are generated by sources such as lasers or light-emitting diodes." .
<http://webisa.webdatacommons.org/324342983>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .