['they', 'modify', 'it', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'other_cos-45.4', '<PRP>', 'EmptyParameter', 'EmptyParameter']
They can modify it and their warp engines to work together.
<PRP> can modify <PRP> and <PRP> Synset('cord.n.01') Synset('machine.n.01') to work together.