['they', 'investigate', 'EmptyParameter', 'fluctuation', 'EmptyParameter']
['<PRP>', 'investigate-35.4', 'EmptyParameter', "Synset('quality.n.01')", 'EmptyParameter']
They investigate what's supposedly a minor fluctuation, on the way discussing Seven's willingness to pursue a relationship.
<PRP> investigate what's supposedly a Synset('minor.a.04') fluctuation, on the Synset('concept.n.01') discussing Seven's Synset('nature.n.04') to pursue a Synset('abstraction.n.06').