<http://webisa.webdatacommons.org/392714767>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<ncedc.org> .
<http://webisa.webdatacommons.org/392714767>	<http://www.w3.org/ns/prov#value>	"level and other instrumental systems operating at low frequency." .
<http://webisa.webdatacommons.org/392714767>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/156897405>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/392714767> .