Assertion: heart valve's life | /r/CapableOf | outlast the life of those patients
Facets:
Source sentences:
text: At this moment in time,(2011), tissue valves are almost exclusively used in patients older than 65 years because in old age the process of calcification is considerably slowed down and also because the life of the valves may outlast the life of those patients who reach a 'respectable' age.