Assertion: worm's blood | /r/CapableOf | flow to right side of the heart
Facets:
value: from the large veins
type: CAUSE
Source sentences:
text: The returning, poorly oxygenated blood flows from the large veins (the Vena Cava Vein) to the right side of the heart, to the lung arteries and capillaries (called the pulmonary arteries).