['they', 'be', 'change', 'EmptyParameter', 'EmptyParameter'] ['they', 'change', 'history', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'seem-109', 'exchange-13.6.1', 'EmptyParameter', 'EmptyParameter'] ['<PRP>', 'exchange-13.6.1', "Synset('time.n.05')", 'EmptyParameter', 'EmptyParameter']
They are there to change history.
<PRP> are there to change Synset('time.n.05').