Resolving It, This, and That in Unrestricted Multi-Party Dialog Christoph Müller author 2007-06 text Proceedings of the 45th Annual Meeting of the Association of Computational Linguistics Annie Zaenen editor Antal van den Bosch editor Association for Computational Linguistics Prague, Czech Republic conference publication muller-2007-resolving https://aclanthology.org/P07-1103/ 2007-06 816 823