['they', 'know', 'EmptyParameter', 'race', 'of'] ['race', 'use', 'conduit', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'comprehend-87.2', 'EmptyParameter', "Synset('biological_group.n.01')", 'of'] ["Synset('biological_group.n.01')", 'use-105.1', "Synset('way.n.06')", 'EmptyParameter', 'EmptyParameter']
They all know of only one race that uses transwarp conduits.
<PRP> all know of only one Synset('biological_group.n.01') that uses transwarp Synset('way.n.06').