code: def filter_blank_words(train_file, train_filtered_file):
      """
      As of July 2022, this dataset has blank words with O labels, which is not ideal
  
      This method removes those lines
      """
      with open(train_file, encoding="utf-8") as fin:
          with open(train_filtered_file, "w", encoding="utf-8") as fout:
              for line in fin:
                  if line.strip() == "O":
                      continue
                  fout.write(line)
  
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 3 for calling a global function with example usage: filter_blank_words(train_file, train_filtered_file) without return types