About: http://webisa.webdatacommons.org/282426182

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	User input device 20 represents any conventional data input device, whether key-activated or configured as a pointing device, such as a mouse or trackball.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com