['doctor', 'work', 'EmptyParameter', 'surface', 'on']
['<PERSON>0', 'work-73.2', 'EmptyParameter', "Synset('feature.n.01')", 'on']
Later, The Doctor is working on the surface of planet.
Later, <PERSON>0 is working on <PERSON>0 Synset('feature.n.01') of Synset('natural_object.n.01').