About: http://webisa.webdatacommons.org/239588789

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	Further, the data signal is not limited to an electric signal, which is popularly employed, but an electromagnetic wave such as light can also be employed.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com