['they', 'see', 'EmptyParameter', 'database', 'in']
['<PRP>', 'discover-84', 'EmptyParameter', "Synset('message.n.02')", 'in']
They're one of the other species they saw in the database.
They're one of the Synset('other.a.01') Synset('category.n.02') <PRP> saw in the Synset('message.n.02').