code: def get_top_sentences(self):
          ''' getter '''
          if isinstance(self.__top_sentences, int) is False:
              raise TypeError("The type of __top_sentences must be int.")
          return self.__top_sentencef get_top_sentences(self):
          ''' getter '''
          if isinstance(self.__top_sentences, int) is False:
              raise TypeError("The type of __top_sentences must be int.")
          return self.__top_sentences
docs: getter