About: http://webisa.webdatacommons.org/218863348

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 surgeon indicates the desired location of the focal point of ultrasound transducer 19 by means of an input device 120 which can be a three-dimensional pointing device such as a track ball or a mouse.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com