Assertion: heart attack | /r/HasProperty | a blockage of an artery
Facets:
Source sentences:
text: A heart attack is a blockage of an artery in the heart that leads to a damaged heart muscle unless it goes away on its own without treatment.
text: While they are both medical emergencies, a heart attack is the blockage of an artery leading to the heart, and a cardiac arrest involves the heart stopping the pumping of blood around the body.