About: http://webisa.webdatacommons.org/271145015

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	Various difficulties, however, must be overcome in concealment, since the radio transmitter requires for its operation both power supply devices and an antenna and other parts that tend to be bulky.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com