About: http://webisa.webdatacommons.org/177027464

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 contrast to the mitral heart valve shown in WO 97/49355, the walls 13 and 14 are not set perfectly perpendicular to the plane of the base ring, but at an angle ?? of about 15??? (see in particular FIG. 6).
http://www.w3.org/ns/prov#wasQuotedFrom	google.es