['he', 'collapse', 'EmptyParameter', 'floor', 'to']
['<PRP>', 'other_cos-45.4', 'EmptyParameter', "Synset('area.n.05')", 'to']
He collapses to the floor, clutching his chest in agony.
<PRP> collapses to the floor, clutching <PRP> Synset('part.n.03') in Synset('symptom.n.01').