['they', 'beat', 'retreat', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'sound_emission-43.2', "Synset('signal.n.01')", 'EmptyParameter', 'EmptyParameter']
They beat a hasty retreat once outside.
<PRP> beat a hasty Synset('signal.n.01') once Synset('outside.a.01').