Assertion: angina | /r/HasProperty | precursor
Facets:
value: for a heart attack
type: PURPOSE
value: to a heart attack
type: TRANSITIVE-OBJECT
value: in many causes
type: OTHER
Source sentences:
text: In many causes, anginas are a precursor to a heart attack.
text: As angina pectoris could be a precursor for a heart attack your cardiologist will want to diagnose as to how serious it is.