['he', 'begin', 'work', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'begin-55.1-1-1', "Synset('physical_phenomenon.n.01')", 'EmptyParameter', 'EmptyParameter']
Later, eating Haley's salad, alone in the lab, he begins his work.
Later, eating Haley's salad, alone in the lab, <PRP> begins <PRP> Synset('physical_phenomenon.n.01').