Frustratingly Hard Evidence Retrieval for QA Over Books Xiangyang Mou author Mo Yu author Bingsheng Yao author Chenghao Yang author Xiaoxiao Guo author Saloni Potdar author Hui Su author 2020-07 text Proceedings of the First Joint Workshop on Narrative Understanding, Storylines, and Events Claire Bonial editor Tommaso Caselli editor Snigdha Chaturvedi editor Elizabeth Clark editor Ruihong Huang editor Mohit Iyyer editor Alejandro Jaimes editor Heng Ji editor Lara J Martin editor Ben Miller editor Teruko Mitamura editor Nanyun Peng editor Joel Tetreault editor Association for Computational Linguistics Online conference publication mou-etal-2020-frustratingly 10.18653/v1/2020.nuse-1.13 https://aclanthology.org/2020.nuse-1.13/ 2020-07 108 113