code: def clique():
      g = dgl.graph(
          ([0, 0, 0, 1, 1, 1, 2, 2, 2], [0, 1, 2, 0, 1, 2, 0, 1, 2])
      )
      return g
  
imports: from collections import defaultdict
  import backend
  import dgl
  import networkx
  import numpy
  import scipy.sparse
label_desc: Use image node_id 15 for calling a global function with example usage: clique() and returns: g