['engineer', 'begin', 'duty', 'EmptyParameter', 'EmptyParameter']
["Synset('causal_agent.n.01')", 'begin-55.1-1-1', "Synset('tax.n.01')", 'EmptyParameter', 'EmptyParameter']
The engineers begin their duties.
the Synset('causal_agent.n.01') begin <PRP> Synset('tax.n.01').