['it', 'dawn', 'EmptyParameter', 'he', 'on'] ['she', 'ask', 'he', 'EmptyParameter', 'on']
['<PRP>', 'appear-48.1.1', 'EmptyParameter', '<PRP>', 'on'] ['<PRP>', 'urge-58.1', '<PRP>', 'EmptyParameter', 'on']
It dawns on him that she is asking him out.
<PRP> dawns on <PRP> that <PRP> is asking <PRP> out.