['they', 'meet', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'contiguous_location-47.8-1', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
One of the aliens they met, Arturis, was very helpful.
one of the Synset('entrant.n.03') <PRP> met, Arturis, was very Synset('helpful.a.01').