Assertion: grenade | /r/CapableOf | negate any need
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Source sentences:
text: The grenade is propelled by a normal ball or tracer round to a maximum range of thirty meters and is detonated by the impact of the standoff rod against the door to be breached, the standoff distance allowing the blast wave to affect as much of the door surface as possible, negating any need to aim for hinges or locks.