Assertion: pericardium | /r/HasProperty | sac
Facets:
value: around the heart
type: LOCATION
Source sentences:
text: The pericardium is a sac around the heart.
text: The pericardium is a sac around the heart.
text: The pericardium is a sac composed of two layers -- a fibrous membrane on the outside, and a serous one on the inside.