Ad Hoc Treebank Structures Markus Dickinson author 2008-06 text Proceedings of ACL-08: HLT Johanna D Moore editor Simone Teufel editor James Allan editor Sadaoki Furui editor Association for Computational Linguistics Columbus, Ohio conference publication dickinson-2008-ad https://aclanthology.org/P08-1042/ 2008-06 362 370