['they', 'have', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'own-100', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
What is certain is what they have with each other here and now.
what is Synset('certain.a.04') is what <PRP> have with each Synset('other.a.01') here and <DATE>0.