Assertion: external defibrillator | /r/HasProperty | a lifesaving machine
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Source sentences:
text: An automated external defibrillator (AED) is a lifesaving machine that is used to check a person's heart rhythm and let the operator of the machine know whether or not the person's heart needs a jolt to reestablish a normal heart rhythm.
text: An automatic external defibrillator or AED is a lifesaving computerized device that checks an individual's heart rhythm and delivers a shock when the rhythm is abnormal or absent.