['they', 'excavate', 'site', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'search-35.2', "Synset('machine.n.01')", 'EmptyParameter', 'EmptyParameter']
They were excavating a Klingon garbage site.
<PRP> were excavating a <ORGANIZATION>0 Synset('container.n.01') Synset('machine.n.01').