code: def governor(self):
          
          if self._governor is None:
              governors = self._element.xpath('governor')
              if len(governors) > 0:
                  self._governor = DependencyNode.load(self._graph, governors[0])
          return self._governor
docs: Accesses the governor node
  
          :getter: Returns the Governor node
          :type: corenlp_xml.dependencies.DependencyNode