About: http://webisa.webdatacommons.org/276792900

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 signal can be transmitted in the form of electromagnetic radiation, such as light or radio waves; or of acoustic waves, which may be ultrasonic; or by conduction of electricity or heat, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com