['they', 'see', 'asteroid', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'discover-84', "Synset('celestial_body.n.01')", 'EmptyParameter', 'EmptyParameter']
They see a particularly large asteroid moving towards them.
<PRP> see a particularly Synset('large.a.01') Synset('celestial_body.n.01') moving towards <PRP>.