About: http://webisa.webdatacommons.org/285292759

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	Many of these devices, such as a mouse and track ball, use a rotatable ball to determine position.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com