Assertion: defibrillator | /r/HasProperty | necessary
Facets:
value: often
type: DEGREE
Source sentences:
text: Defibrillators are necessary for heart patients who experience highly elevated heart beat rates due to the poorly functioning heart muscle.
text: Sometimes CPR will do that as well, but often a defibrillator is needed.
text: Defibrillators do n’t stand near the metal detector any longer than is necessary.