['they', 'know', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter'] ['they', 'have', 'ready', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'comprehend-87.2', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'own-100', "Synset('ready.a.01')", 'EmptyParameter', 'EmptyParameter']
Unfortunately, they don't know and yet they have to be ready for it.
Unfortunately, <PRP> don't know and yet <PRP> have to be Synset('ready.a.01') for <PRP>.