Multi-Type Conversational Question-Answer Generation with Closed-ended and Unanswerable Questions Seonjeong Hwang author Yunsu Kim author Gary Geunbae Lee author 2022-11 text Proceedings of the 2nd Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics and the 12th International Joint Conference on Natural Language Processing (Volume 2: Short Papers) Yulan He editor Heng Ji editor Sujian Li editor Yang Liu editor Chua-Hui Chang editor Association for Computational Linguistics Online only conference publication hwang-etal-2022-multi 10.18653/v1/2022.aacl-short.22 https://aclanthology.org/2022.aacl-short.22/ 2022-11 169 177