code: def _tokenize_fn(sentence: str) -> Sequence[str]:
      """Tokenizes sentence into list of words.
  
      Args:
          sentence: A sentence separated by white space.
  
      Return:
          List of words
  
      """
      return sentence.split()
  
file_path: torchmetrics/src/torchmetrics/functional/text/bleu.py
imports: from collections import Counter
  from typing import Callable, Optional, Sequence, Tuple, Union
  import torch
  from torch import Tensor, tensor
label_desc: Use image node_id 2 for calling a global function with example usage: _tokenize_fn(sentence) and returns: sentence