Challenge descriptions

• Vanessa Lopez, Christina Unger, Philipp Cimiano, Enrico Motta: Evaluating question answering over linked data.
  Web Semantics Science Services And Agents On The World Wide Web 21:3–13, 2013.

@article{Lopezetal2013,
  author    = {Lopez, Vanessa and Unger, Christina and Cimiano, Philipp and Motta, Enrico},
  title     = {Evaluating question answering over linked data},
  journal   = {Web Semantics Science Services And Agents On The World Wide Web},
  volume    = {21},
  pages     = {3--13},
  publisher = {Elsevier},
  year      = {2013},
  doi       = {10.1016/j.websem.2013.05.006},
  issn      = {1570-8268}
}

• Christina Unger, Corina Forascu, Vanessa Lopez, Axel-Cyrille Ngonga Ngomo, Elena Cabrio, Philipp Cimiano, Sebastian Walter: Question Answering over Linked Data (QALD-5). CLEF 2015 Working Notes.
   
• Christina Unger, Corina Forascu, Vanessa Lopez, Axel-Cyrille Ngonga Ngomo, Elena Cabrio, Philipp Cimiano, Sebastian Walter: Question Answering over Linked Data (QALD-4). CLEF 2014 Working Notes, pp. 1172-1180.
   
• Elena Cabrio, Philipp Cimiano, Vanessa Lopez, Axel-Cyrille Ngonga Ngomo, Christina Unger, Sebastian Walter: QALD-3: Multilingual Question Answering over Linked Data. CLEF 2013 Working Notes.