['they', 'wait', 'time', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'exist-47.1', "Synset('happening.n.01')", 'EmptyParameter', 'EmptyParameter']
They have been waiting a long time.
<PRP> have been waiting a Synset('long.a.06') Synset('happening.n.01').