Assertion: pulmonary circulation's vein | /r/CapableOf | lead into the heart
Facets:
Source sentences:
text: Two large veins that lead into the heart are the superior vena cava and inferior vena cava.
text: The oxygen-poor blood leaves the capillary beds via small veins (called venules) and drains into a network of systemic veins that eventually lead to the venae cavae (either of the two large veins leading into the heart).