Harvesting Re-usable High-level Rules for Expository Dialogue Generation Svetlana Stoyanchev author Paul Piwek author 2010-07 text Proceedings of the 6th International Natural Language Generation Conference John Kelleher editor Brian Mac Namee editor Ielka van der Sluis editor Association for Computational Linguistics conference publication stoyanchev-piwek-2010-harvesting https://aclanthology.org/W10-4215/ 2010-07