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<http://webisa.webdatacommons.org/341262784>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/341262784>	<http://www.w3.org/ns/prov#value>	"Unfortunately, replacement valves are susceptible to problems such as degeneration, thrombosis, and calcification." .
<http://webisa.webdatacommons.org/341262784>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .