code: def tokenize(x):
      """lambda fn for tokenize sentences"""
      ret = []
      for w in x.split(" "):
          if w != "":
              ret.append(w)
      return ret
  
imports: import re
  import os
  import pickle
  import urllib
  import tarfile
  import numpy
  import pandas
  import nltk
  from nltk.stem import PorterStemmer
  from nltk.tokenize.toktok import ToktokTokenizer
  from gensim.models.keyedvectors import KeyedVectors
  from sklearn.model_selection import train_test_split
  from bs4 import BeautifulSoup
label_desc: Use image node_id 10 for calling a global function with example usage: tokenize(x) and returns: ret