['it', 'put', 'protect', 'alien', 'by'] ['it', 'protect', 'society', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'put-9.1-2', 'defend-72.3', "Synset('entrant.n.03')", 'by'] ['<PRP>', 'defend-72.3', "Synset('upper_class.n.01')", 'EmptyParameter', 'EmptyParameter']
It was put up by aliens to protect an indigenous society, the Ventu, from the Ledosians in their past.
<PRP> was put up by Synset('entrant.n.03') to protect an indigenous society, the Ventu, from the <MISC>2 in <PRP> Synset('grammatical_category.n.01').