code: def __sample(data: List[Sentence], percentage: float = 0.1):
      import random
  
      random.shuffle(data)
      index = int(len(data) * percentage)
      a = data[:-index]
      b = data[-index:]
      return a, b
  
imports: import os
  import re
  import shutil
  from enum import Enum
  from os.path import dirname, join
  from typing import Union, List
  import yaml
  from underthesea.corpus import Corpus
  from underthesea.corpus.categorized_corpus import CategorizedCorpus
  from underthesea.corpus.data import Sentence, Label
  from underthesea.file_utils import cached_path, UNDERTHESEA_FOLDER
  from pathlib import Path
  import zipfile
  from underthesea.utils import print_table
label_desc: Use image node_id 9 for calling the DataFetcher obj's underlying member method code with example usage: obj.__sample(data, percentage) and returns: a,  b