['he', 'see', 'box', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'comprehend-87.2-1-1', "Synset('stroke.n.12')", 'EmptyParameter', 'EmptyParameter']
He didn't see a little box on his chair.
<PRP> didn't see a Synset('small.a.01') Synset('stroke.n.12') on <PRP> Synset('support.n.10').