code: def _tokenize(self, text):
          
          sentences = []
          tokens = []
          for word in self._clean_accents(text).split(' '):
              tokens.append(word)
              if '.' in word:
                  sentences.append(tokens)
                  tokens = []
          return sentences
docs: Tokenize the text into a list of sentences with a list of words.
  
          :param text: raw text
          :return: tokenized text
          :rtype : list