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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def dependent(self):
 """ Accesses the dependent node :getter: returns the Dependent node :type: corenlp_xml.dependencies.DependencyNode """

        if self._dependent is None:
            dependents = self._element.xpath('dependent')
            if len(dependents) > 0:
                self._dependent = DependencyNode.load(self._graph, dependents[0])
        return self._dependent