['they', 'find', 'asteroid', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'discover-84', "Synset('celestial_body.n.01')", 'EmptyParameter', 'EmptyParameter']
Yes, they should have found a nice empty asteroid to test it on.
Yes, <PRP> should have found a Synset('nice.a.01') Synset('empty.a.01') Synset('celestial_body.n.01') to test <PRP> on.