code: def demo_error_analysis():
      """
      Writes a file with context for each erroneous word after tagging testing data
      """
      postag(error_output="errors.txt")
  
imports: import os
  import pickle
  import random
  import time
  from nltk.corpus import treebank
  from nltk.tag import BrillTaggerTrainer, RegexpTagger, UnigramTagger
  from nltk.tag.brill import Pos, Word
  from nltk.tbl import Template, error_list
label_desc: Use image node_id 10 for calling a global function with example usage: demo_error_analysis() without return types