About: http://webisa.webdatacommons.org/117427322

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 marker devices may be provided from radiopaque or other materials that create an artifact or are otherwise detectable using the imaging device to identify the relative location and/or orientation of the elongate members 30.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com