def get_simple_graph2():
    node_f = [np.array([[1, 1, 1], [2, 2, 2]])]
    edges = [np.array([[0, 1], [0, 0]])]
    edge_f = [np.array([[3, 3, 3], [4, 4, 4]])]
    return (node_f, edges, edge_f)
def get_simple_graph2():
    node_f = [np.array([[1, 1, 1], [2, 2, 2]])]
    edges = [np.array([[0, 1], [0, 0]])]
    edge_f = [np.array([[3, 3, 3], [4, 4, 4]])]
    return (node_f, edges, edge_f)