Assertion: dissection | /r/CapableOf | involve valve
Facets:
value: in the heart
type: LOCATION
Source sentences:
text: In addition, after an initial tear causes a dissection, the dissection may spread and involve branching vessels, valves, or even the sac surrounding the heart.
text: In addition, if a dissection travels far enough to involve valves in the heart, this may occur.