code: def bipartite1():
      return dgl.heterograph(
          {("_U", "_E", "_V"): ([0, 0, 0, 2, 2, 3], [0, 1, 4, 1, 4, 3])}
      )
  
imports: from collections import defaultdict
  import backend
  import dgl
  import networkx
  import numpy
  import scipy.sparse
label_desc: Use image node_id 3 for calling a global function with example usage: bipartite1() and returns: dgl