Supporting Annotation Layers for Natural Language Processing Preslav Nakov author Ariel Schwartz author Brian Wolf author Marti Hearst author 2005-06 text Proceedings of the ACL Interactive Poster and Demonstration Sessions Masaaki Nagata editor Ted Pedersen editor Association for Computational Linguistics Ann Arbor, Michigan conference publication nakov-etal-2005-supporting 10.3115/1225753.1225770 https://aclanthology.org/P05-3017/ 2005-06 65 68