code: def filter_bad_words(train_sentences):
      """
      Not bad words like poop, but characters that don't exist
  
      These characters look like n and l in emacs, but they are really
      0xF06C and 0xF06E
      """
      return [
          [x for x in sentence if not x[0] in ("", "")]
          for sentence in train_sentences
      ]
  
file_path: stanza/stanza/utils/datasets/ner/convert_bn_daffodil.py
imports: import argparse
  import os
  import random
  import tempfile
  from stanza.utils.datasets.ner.utils import read_tsv, write_dataset
label_desc: Use image node_id 5 for calling a global function with example usage: filter_bad_words(train_sentences) and returns: unknown