['he', 'believe', 'they', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'conjecture-29.5', '<PRP>', 'EmptyParameter', 'EmptyParameter']
He does not believe them to be a danger to the crew.
<PRP> does not believe <PRP> to be a Synset('undertaking.n.01') to the Synset('unit.n.03').