Assertion: cardiomyopathy's heart | /r/HasProperty | the pericardium
Facets:
Source sentences:
text: This condition causes the sac-like membrane around the heart (the pericardium) to become inflamed and thickened.
text: That’s where the layers of the sac that surrounds the heart (called the pericardium) become thickened, calcified, and stiff.