['it', 'have', 'companion', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'own-100', "Synset('person.n.01')", 'EmptyParameter', 'EmptyParameter']
It had a companion, but lost track of it on the planet.
<PRP> had a companion, but lost Synset('sport.n.01') of <PRP> on the Synset('natural_object.n.01').