['she', 'put', 'front', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'put-9.1-2', "Synset('group.n.01')", 'EmptyParameter', 'EmptyParameter']
She puts up a good front.
<PRP> puts up a Synset('good.a.01') Synset('group.n.01').