@property<EOL><INDENT>def tgt_vocab(self):<DEDENT>
if self._tgt_vocab is None:<EOL><INDENT>tgt_vocab_file_name, tgt_vocab_hash =self._data_file[self._pair_key]['<STR_LIT>' + '<STR_LIT:_>' + self._tgt_lang]<EOL>[tgt_vocab_path] = self._fetch_data_path([(tgt_vocab_file_name, tgt_vocab_hash)])<EOL>with io.open(tgt_vocab_path, '<STR_LIT:r>', encoding='<STR_LIT:utf-8>') as in_file:<EOL><INDENT>self._tgt_vocab = Vocab.from_json(in_file.read())<EOL><DEDENT><DEDENT>return self._tgt_vocab<EOL>
Target Vocabulary of the Dataset.

        Returns
        -------
        tgt_vocab : Vocab
            Target vocabulary.