@InProceedings{nakov-EtAl:2005:PosterDemo,
  author    = {Nakov, Preslav  and  Schwartz, Ariel  and  Wolf, Brian  and  Hearst, Marti},
  title     = {Supporting Annotation Layers for Natural Language Processing},
  booktitle = {Proceedings of the ACL Interactive Poster and Demonstration Sessions},
  month     = {June},
  year      = {2005},
  address   = {Ann Arbor, Michigan},
  publisher = {Association for Computational Linguistics},
  pages     = {65--68},
  url       = {http://www.aclweb.org/anthology/P/P05/P05-3017}
}