['she', 'hear', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'discover-84', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
This is the origin of the disembodied voice she had heard.
this is the Synset('natural_process.n.01') of the disembodied Synset('linguistic_relation.n.01') <PRP> had heard.