About: http://webisa.webdatacommons.org/436865224

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The antenna can also be designed for receiving EM-radiation at another frequency band, such as between about 40 to about 70 Hz, and preferably about 50 and/or about 60 Hz, i.e. the frequency which is normally used for mains devices.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk