Prague Markup Language Framework Jirka Hana author Jan Štěpánek author 2012-07 text Proceedings of the Sixth Linguistic Annotation Workshop Nancy Ide editor Fei Xia editor Association for Computational Linguistics Jeju, Republic of Korea conference publication hana-stepanek-2012-prague https://aclanthology.org/W12-3603/ 2012-07 12 21