['doctor', 'have', 'son', 'EmptyParameter', 'EmptyParameter']
['<PERSON>3', 'own-100', "Synset('child.n.02')", 'EmptyParameter', 'EmptyParameter']
The Doctor could have a son, as he is a hologram.
<PERSON>3 could have a son, as <PRP> is a <OBJECT>1.