code: def _extract_sentences(self, file):
      with open(file, encoding="utf-8") as f:
          content = f.read()
          sentences = content.split("\n\n")
          sentences = [self._extract_sentence(s) for s in sentences]
      return sentences
  
file_path: underthesea/underthesea/datasets/uit_absa_restaurant/uit_absa_restaurant.py
imports: from os.path import join
  import re
  from underthesea.data_fetcher import DataFetcher
  from underthesea.file_utils import DATASETS_FOLDER
label_desc: Use image node_id 4 for calling the UITABSARestaurant obj's underlying member method code with example usage: obj._extract_sentences(file) and returns: sentences