['Tucker', 'show', 'he', 'EmptyParameter', 'EmptyParameter'] ['he', 'hear', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
['<PERSON>7', 'crane-40.3.2', '<PRP>', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'discover-84', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
Tucker showed him when he hears.
<PERSON>7 showed <PRP> when <PRP> hears.