MC⌃2: Multi-perspective Convolutional Cube for Conversational Machine Reading Comprehension Xuanyu Zhang author 2019-07 text Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics Anna Korhonen editor David Traum editor Lluís Màrquez editor Association for Computational Linguistics Florence, Italy conference publication zhang-2019-mc 10.18653/v1/P19-1622 https://aclanthology.org/P19-1622/ 2019-07 6185 6190