code: def at_least(x):
      # handling the illegal data
      if len(x) == 0:
          return ["<UNK>"]
      else:
          return x
  
imports: import json
  import pickle
  import random
  import dgl
  import numpy
  import torch
label_desc: Use image node_id 5 for calling a global function with example usage: at_least(x) and returns: list, x