@InProceedings{katz-trec2005,
          title ={External Knowledge Sources for Question Answering},
         author ={Boris Katz and Gregory Marton and Gary Borchardt and Alexis Brownell and Sue Felshin and Daniel Loreto and Jesse Louis-Rosenberg and Ben Lu and Federico Mora and Stephan Stiller and Ozlem Uzuner and Angela Wilcox},
      booktitle ={Proceedings of the 14th Annual Text {REtrieval} Conference ({TREC2005})},
           year ={2005},
          pages ={},
   organization ={},
  length-in-pages ={10}
}