@inproceedings{bu2010function,
  title={Function-based question classification for general QA},
  author={Bu, Fan and Zhu, Xingwei and Hao, Yu and Zhu, Xiaoyan},
  booktitle={Proceedings of the 2010 conference on empirical methods in natural language processing},
  pages={1119--1128},
  year={2010},
  organization={Association for Computational Linguistics}
}