About: http://webisa.webdatacommons.org/233723579

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 user can then mark what appears to be the centerline of the occluded portion of the vessel, for example by positioning a cursor 36 (which can be manipulated by a mouse or joystick or other device and clicking.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com