['he', 'develop', 'skill', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'appear-48.1.1', "Synset('cognition.n.01')", 'EmptyParameter', 'EmptyParameter']
He has developed the necessary skills.
<PRP> has developed the Synset('necessary.a.01') Synset('cognition.n.01').