['he', 'know', 'place', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'comprehend-87.2', "Synset('location.n.01')", 'EmptyParameter', 'EmptyParameter']
He still knows good hiding places.
<PRP> still knows Synset('good.a.03') Synset('isolation.n.01') Synset('location.n.01').