About: http://webisa.webdatacommons.org/251350828

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	Alternative, non-toxic, high density metals, such as cobalt-chromium, tantalum, iridium, platinum, gold, and the like, have been used in prior art stents.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es