code: def tokenize(text):
      global PROCESS_TOK
      return PROCESS_TOK.tokenize(text)
  
imports: import numpy
  import scipy.sparse
  import math
  from multiprocessing import Pool
  from multiprocessing.util import Finalize
  from functools import partial
  from collections import Counter
  from .None import utils
  from .doc_db import DocDB
  from .None import tokenizers
  import parlai.utils.logging
label_desc: Use image node_id 3 for calling a global function with example usage: tokenize(text) and returns: PROCESS_TOK