David Klotz author Johannes Wienke author Julia Peltason author Britta Wrede author Sebastian Wrede author Vasil Khalidov author Jean-Marc Odobez author 2011-06 text Joyce Y Chai editor Johanna D Moore editor Rebecca J Passonneau editor David R Traum editor Association for Computational Linguistics Portland, Oregon conference publication klotz-etal-2011-engagement https://aclanthology.org/W11-2042/ 2011-06 341 343