['they', 'see', 'two', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'discover-84', '<NUMBER>1', 'EmptyParameter', 'EmptyParameter']
They see two strange looking aliens walking past.
<PRP> see <NUMBER>1 Synset('strange.a.01') looking Synset('entrant.n.03') walking Synset('grammatical_category.n.01').