['they', 'claim', 'EmptyParameter', 'rival', 'by']
['<PRP>', 'say-37.7', 'EmptyParameter', "Synset('person.n.01')", 'by']
Centuries of inactivity they have been claimed by their rivals.
Synset('fundamental_quantity.n.01') of Synset('attribute.n.02') <PRP> have been claimed by <PRP> Synset('person.n.01').