['they', 'return', 'explanation', 'EmptyParameter', 'EmptyParameter'] ['they', 'demand', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'escape-51.1-1', "Synset('act.n.02')", 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'require-103-1', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
They return and demand an explanation.
<PRP> return and demand an Synset('act.n.02').