def steps(self, goal):
        """Get the list of individual relations leading to the targeted node

        Args:
            goal (str): Name of the targeted node
        Return:
            list of tuple of Node
        """

        path = self.path(goal)
        for i in range(len(path) - 1):
            yield path[i], path[i + 1]
Get the list of individual relations leading to the targeted node

        Args:
            goal (str): Name of the targeted node
        Return:
            list of tuple of Node