['it', 'hide', 'EmptyParameter', 'midst', 'in']
['<PRP>', 'concealment-16-1', 'EmptyParameter', "Synset('region.n.01')", 'in']
It was hidden right in the midst of the complex.
<PRP> was hidden right in the Synset('region.n.01') of the Synset('chemical.n.01').