@inproceedings{Wilson-Wiebe:2003:SIGDIAL,
  author = {Wilson, Theresa  and  Wiebe, Janyce},
  title = {Annotating Opinions in the World Press},
  booktitle = {Proceedings of the Fourth {SIGdial} Workshop on Discourse and Dialogue},
  editor = {Akira Kurematsu and Alexander Rudnicky and Syun Tutiya},
  url = {http://www.aclweb.org/anthology/W03-2102},
  year = 2003,
  pages = {13--22}