About: http://webisa.webdatacommons.org/219187579

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 transmission medium in this case may be a conductor or what propagates through the air, for example, an electromagnetic wave, such as radio wave, light and infrared radiation, and an ultrasonic wave.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com