['barrier', 'lower', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
["Synset('natural_object.n.01')", 'caused_calibratable_cos-45.6.2-1', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
The barrier has finally been lowered.
the Synset('natural_object.n.01') has finally been lowered.