code: def graph2():
      return dgl.graph(
          (
              [0, 0, 0, 1, 1, 2, 2, 2, 3, 3, 3, 4, 6, 6, 7, 8, 9],
              [4, 5, 1, 2, 4, 7, 9, 8, 6, 4, 1, 0, 1, 0, 2, 3, 5],
          ),
          row_sorted=True,
      )
  
imports: from collections import defaultdict
  import backend
  import dgl
  import networkx
  import numpy
  import scipy.sparse
label_desc: Use image node_id 9 for calling a global function with example usage: graph2() and returns: dgl