<http://webisa.webdatacommons.org/prov/290590949>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/404459465> .
<http://webisa.webdatacommons.org/404459465>	<http://www.w3.org/ns/prov#value>	"Frequency is used to measure radio waves and other kinds of radiation." .
<http://webisa.webdatacommons.org/404459465>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/404459465>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<wordsmyth.net> .