@InProceedings{derczynski-EtAl:2008:IR4QA,
  author    = {Derczynski, Leon  and  Wang, Jun  and  Gaizauskas, Robert  and  Greenwood, Mark A.},
  title     = {A Data Driven Approach to Query Expansion in Question Answering},
  booktitle = {Coling 2008: Proceedings of the 2nd workshop on Information Retrieval for Question Answering},
  month     = {August},
  year      = {2008},
  address   = {Manchester, UK},
  publisher = {Coling 2008 Organizing Committee},
  pages     = {34--41},
  url       = {http://www.aclweb.org/anthology/W08-1805}
}