<http://webisa.webdatacommons.org/prov/288874095>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/447272287> .
<http://webisa.webdatacommons.org/447272287>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/447272287>	<http://www.w3.org/ns/prov#value>	"the 50 and 60 HZ electric and magnetic fields produced by such equipment as transmission lines, computers, electric blankets, electric appliances, televisions, etc.." .
<http://webisa.webdatacommons.org/447272287>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<omnicontrols.com> .
<http://webisa.webdatacommons.org/prov/186782921>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/447272287> .