About: http://webisa.webdatacommons.org/21444308

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 system according to claim 10, further including means for sensing the amount of power transmitted, and means for adjusting the frequency of the AC signal whereby the efficiency of the power transmission is periodically optimized.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk