About: http://webisa.webdatacommons.org/419972322

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	In addition to the coordinate input device using electromagnetic coupling by means of electromagnetic signals, there is a device which uses optical coupling.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com