['he', 'return', 'EmptyParameter', 'work', 'to']
['<PRP>', 'convert-26.6.2', 'EmptyParameter', "Synset('physical_phenomenon.n.01')", 'to']
He thus returns to his work at the console.
<PRP> thus returns to <PRP> Synset('physical_phenomenon.n.01') at the Synset('furniture.n.01').