['they', 'do', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter'] ['some', 'explore', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
['<PRP>', 'act-114', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter'] ['some', 'investigate-35.4', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
At least one of them should do some exploring.
at Synset('least.a.01') one of <PRP> should do some exploring.