['he', 'do', 'fly', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'act-114', 'run-51.3.2', 'EmptyParameter', 'EmptyParameter']
He will do the flying from now on because he is the pilot.
<PRP> will do the flying from <DATE>0 on because <PRP> is the Synset('skilled_worker.n.01').