docs: public List<List<IN>> classifyRaw(String str,
                                      DocumentReaderAndWriter<IN> readerAndWriter) {
      ObjectBank<List<IN>> documents =
        makeObjectBankFromString(str, readerAndWriter);
      List<List<IN>> result = new ArrayList<List<IN>>();
  
      for (List<IN> document : documents) {
        classify(document);
  
        List<IN> sentence = new ArrayList<IN>();
        for (IN wi : document) {
          // TaggedWord word = new TaggedWord(wi.word(), wi.answer());
          // sentence.add(word);
          sentence.add(wi);
        }
        result.add(sentence);
      }
      return result;
    }