['she', 'understand', 'logic', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'comprehend-87.2', "Synset('method.n.01')", 'EmptyParameter', 'EmptyParameter']
She doesn't understand the logic behind the engineer's departure.
<PRP> doesn't understand the Synset('method.n.01') behind the engineer's Synset('change.n.01').