@inproceedings{ijcai2005p263,
  title     = {Question Classification by Structure Induction},
  author    = {van Zaanen, Menno and Pizzato, Luiz Augusto Sangoi and Mollá, Diego},
  booktitle = {Proceedings of the Nineteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-05}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  pages     = {1638--1638},
  year      = {2005},
  url       = {https://ijcai.org/proceedings/2005/263},
}