Assertion: heart attack's symptom | /r/CapableOf | persist for hour
Facets:
value: before a heart attack
type: TEMPORAL
Source sentences:
text: More often, though, symptoms start slowly and persist for hours, days or weeks before a heart attack.
text: However, symptoms more commonly start slowly and persist for hours, days or a week before the actual heart attack.
text: More often, though, symptoms start slowly and persist for hours, days or weeks before a heart attack.