['he', 'go', 'train', 'EmptyParameter', 'EmptyParameter'] ['he', 'train', 'she', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'escape-51.1-1', 'hire-13.5.3', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'hire-13.5.3', '<PRP>', 'EmptyParameter', 'EmptyParameter']
He is going to train her.
<PRP> is going to train <PRP>.