['he', 'understand', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter'] ['it', 'require', 'level', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'comprehend-87.2', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'require-103-1', "Synset('device.n.01')", 'EmptyParameter', 'EmptyParameter']
He understands that it requires a certain level of intimacy.
<PRP> understands that <PRP> requires a Synset('certain.a.04') Synset('device.n.01') of Synset('happiness.n.02').