Assertion: pericardium's heart | /r/CapableOf | prevent overfilling
Facets:
Source sentences:
text: The heart is enclosed within a three-layered pericardial sac that protects the heart, prevents overfilling, and produces a lubricating fluid.
text: On the other hand, pericardium is the outermost, membranous structure of the heart, which protects the heart and prevent the overfilling.