['he', 'hear', 'noise', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'discover-84', "Synset('sensation.n.01')", 'EmptyParameter', 'EmptyParameter']
Then he hears a mechanical clicking noise from one of the lifeforms.
then <PRP> hears a Synset('mechanical.a.03') clicking Synset('sensation.n.01') from one of the lifeform.