['scientist', 'respond', 'EmptyParameter', 'he', 'to'] ['it', 'respond', 'EmptyParameter', 'he', 'to']
["Synset('causal_agent.n.01')", 'respond-113', 'EmptyParameter', '<PRP>', 'to'] ['<PRP>', 'respond-113', 'EmptyParameter', '<PRP>', 'to']
A scientist, however, it is not responding, to both him and his tired assistant's dismay.
a scientist, however, <PRP> is not responding, to both <PRP> and <PRP> Synset('tired.a.01') assistant's Synset('feeling.n.01').