code: def process_train_data(train_data_file, output_file, label):
      with open(train_data_file) as f:
          text = f.read()
          text = text.strip()
          sentences = text.split("\n\n")
      with open(output_file, "a") as f:
          for s in sentences:
              f.write(f"__label__{label} {s}\n")
  
file_path: underthesea/underthesea/datasets/vlsp2016_sa/vlsp2016_sa_corpus.py
imports: import os
  import shutil
  from os.path import dirname, join
  from underthesea.corpus.util import FolderStructure
  from underthesea.file_utils import UNDERTHESEA_FOLDER
  from pathlib import Path
label_desc: Use image node_id 1 for calling a global function with example usage: process_train_data(train_data_file, output_file, label) without return types