Assertion: martial art's technique | /r/HasProperty | smashing
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Source sentences:
text: Fundamental techniques include kicking or smashing the ankle to force it either towards or away from the opposite foot (severe supination or pronation, respectively), heel-stomping the top of the foot where it meets the lower leg so as to break or crush the numerous bones or otherwise disrupt the opponent's balance, and smashing the opponents knee from the side to break the knee (with severe supination and pronation as the desired result).