['barrier', 'have', 'return', 'EmptyParameter', 'EmptyParameter'] ['barrier', 'return', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
["Synset('natural_object.n.01')", 'own-100', 'convert-26.6.2', 'EmptyParameter', 'EmptyParameter'] ["Synset('natural_object.n.01')", 'convert-26.6.2', 'EmptyParameter', 'EmptyParameter', 'EmptyParameter']
Barrier will have to be returned, if anything to recover their technology.
Synset('natural_object.n.01') will have to be returned, if Synset('entity.n.01') to recover <PRP> Synset('use.n.01').