About: http://webisa.webdatacommons.org/140329133

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	In addition, however, an annular member 53 of felt or other suitable material is positioned around the stent 32 between the outer ring 50 and the annular structure provided by the posts 46, 47 and 48 and the lower arms 40, 41 and 42.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com