<http://webisa.webdatacommons.org/55124738>	<http://www.w3.org/ns/prov#value>	"The valve leaflets 21 for their part are made of biological material (preserved human or animal valve leaflets) or of synthetic material, such as a polymer." .
<http://webisa.webdatacommons.org/55124738>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.fr> .
<http://webisa.webdatacommons.org/prov/47793098>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/55124738> .
<http://webisa.webdatacommons.org/55124738>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .