['explosion', 'knock', 'down', 'EmptyParameter', 'EmptyParameter']
["Synset('sound.n.04')", 'sound_emission-43.2', "Synset('body_covering.n.01')", 'EmptyParameter', 'EmptyParameter']
An explosion knocks her down.
an Synset('sound.n.04') knocks <PRP> Synset('body_covering.n.01').