['it', 'appear', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter'] ['she', 'shoot', 'he', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'appear-48.1.1', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'poison-42.2', '<PRP>', 'EmptyParameter', 'EmptyParameter']
At the time, it appeared, so she shot him.
at the time, <PRP> appeared, so <PRP> shot <PRP>.